【C14】_考试资料网

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C1】

A．structure
B．gap
C．category
D．limit

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C1】

A．possibilities
B．reasons
C．effects
D．disadvantages

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C2】

A．adopting
B．innovating
C．adapting
D．transferring

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C2】

A．sustaining
B．tracking
C．training
D．supervising

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C3】

A．expressed
B．confirmed
C．inferred
D．offered

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C3】

A．For
B．Despite
C．During
D．By

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C4】

A．identifying
B．requiring
C．assessing
D．illustrating

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C4】

A．opposed to
B．cared about
C．admitted to
D．failed in

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C5】

A．wish
B．right
C．choice
D．permission

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C5】

A．over
B．through
C．on
D．at

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C6】

A．poor
B．weak
C．perfect
D．sound

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C6】

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C7】

A．since
B．or
C．but
D．so

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C7】

A．fight for
B．go without
C．live on
D．deal with

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C8】

A．independent
B．representative
C．critical
D．characteristic

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C8】

A．in contrast with
B．in front of
C．in case of
D．in terms of

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C9】

A．While
B．Yet
C．When
D．If

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C9】

A．small
B．surplus
C．endless
D．multiple

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C10】

A．by
B．to
C．for
D．with

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C10】

A．almost
B．without
C．still
D．only

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C11】

A．amazing
B．tiring
C．troubling
D．frightening

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C11】

A．Even
B．Hence
C．But
D．Only

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C12】

A．unknown
B．alert
C．silent
D．careful

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C12】

A．powered
B．exposed
C．adapted
D．forced

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C13】

A．falling
B．extending
C．rising
D．shortening

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C13】

A．complaint
B．compromise
C．complements
D．confidence

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C14】

A．email
B．shop
C．security
D．account

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C14】

A．down
B．off
C．up
D．through

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C15】

A．funded
B．touched
C．enabled
D．confined

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C15】

A．Once
B．If
C．While
D．Unless

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C16】

A．focusing on
B．opting for
C．keeping to
D．applying for

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C16】

A．specific
B．advanced
C．continual
D．eternal

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C17】

A．convinces
B．concludes
C．speculates
D．doubts

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C17】

A．access
B．share
C．assess
D．avoid

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C18】

A．cause
B．stress
C．crisis
D．distress

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C18】

A．move
B．contact
C．monitor
D．control

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C19】

A．peculiar
B．critical
C．different
D．consistent

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C19】

A．games
B．transactions
C．experiences
D．friends

单项选择题

Going hungry is a major contributor to ill health, particularly among children, and a new report reveals how long-lasting the damage can be. Researchers at the National Cancer Institute (NCI) and the University of Calgary performed the first longterm study on the【C1】of hunger on general health,【C2】children from birth to 21 years. Most studies to date have【C3】only snapshots of childhood health,【C4】the short-term impact of hunger【C5】a period of time. In the new analysis, the scientists found that children who went hungry at least once in their lives were 2i-times more likely to have【C6】overall health 10 to 15 years later, compared with those who never had to【C7】food. "Our research shows that hunger and food insecurity are really damaging【C8】children"s life chances," says lead author Sharon Kirkpatrick, a visiting fellow at NCI. The study supports earlier findings that【C9】episodes of hunger are more likely to cause ill health than an isolated experience of starvation: children in Kirkpatrick"s analysis who experienced two or more periods of hunger were more than four times as likely to report ill health than those who never went hungry. The relationship, she says, remained strong even after the team accounted【C10】other factors that could influence health, such as age, sex and household characteristics like income. 【C11】one experience of hunger can have lasting effects on a child"s health, a fact that is especially troubling in light of the sobering rise in U.S. households that were【C12】to do without food in 2008: 15% of American families reported some【C13】in the amount or quality of food they consumed,【C14】from 11% the previous year. 15 this study did not probe into the【C16】mechanism by which hunger affects long-term health, Kirkpatrick【C17】that both psychological and physiological factors may be at work. Aside from the obvious negative impact that missing key nutrients and calories can have on growth and development, she says, the psychological【C18】of food insecurity—not being able to afford a【C19】and high-quality source of food—can be【C20】__to youngsters as well.【C20】

A．visible
B．aggressive
C．harmful
D．significant

单项选择题

Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know. The report "Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】of 8 to 12 were【C2】technology faster than expected, with 67 percent using a social media website..【C3】the age eligibility for Facebook being 13, one in four (26 percent)【C4】using the site— although 95 percent said they had their parents"【C5】to do so. The most【C6】site for tweens was Skype (used by 28 percent),【C7】children were also using Instagram, according to the survey of 500 youngsters geographically【C8】of Australia"s online population.【C9】the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】seven percent said they had shared personal information. Australia"s Communications Minister Stephen Conroy said it was【C11】that children talk to strangers online. "It shows we must remain【C12】to online threats," he said. The findings suggest the age at which children first use social media is【C13】, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】was 13. On average, tweens were using three or four devices that can be Internet【C15】, with 66 percent of them【C16】mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day. Most tweens use their devices to【C17】the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】on their child"s online behavior to ensure they have safe online【C19】," said Andrew Littleproud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】within eight to 12 age bracket."【C20】

A．elementary
B．controversial
C．adventurous
D．critical

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