单项选择题

Life Expectancy in the Last Hundred Years
A. moredeadly B. deadly C. lessdeadly D. fatal

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
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单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

51()

A.young
B.new
C.still
D.active

单项选择题

Life Expectancy in the Last Hundred Years
A. ages B. years C. lives D. countries

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
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Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

52()

A.than
B.so
C.as
D.to

单项选择题

Life Expectancy in the Last Hundred Years
A. in B. about C. to D. with

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
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Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

53()

A.suffer
B.benefit
C.result
D.start

单项选择题

Life Expectancy in the Last Hundred Years
A. length B. time C. duration D. span

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

54()

A.looking
B.appearing
C.seeming
D.staying

单项选择题

Life Expectancy in the Last Hundred Years
A. people B. killers C. invention D. nation

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

55()

A.children
B.people
C.women
D.youths

单项选择题

Life Expectancy in the Last Hundred Years
A. more B. less C. high D. highly

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

56()

A.mountains
B.stairs
C.trees
D.walls

单项选择题

Life Expectancy in the Last Hundred Years
A. developed B. less developed C. undeveloped D. developing

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Life Expectancy in the Last Hundred Years
A. moredeadly B. deadly C. lessdeadly D. fatal

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

57()

A.jumping
B.walking
C.running
D.jogging

单项选择题

Life Expectancy in the Last Hundred Years
A. improvements B. factors C. jobs D. measures

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

58()

A.percent
B.numbers
C.hundreds
D.dozens

单项选择题

Life Expectancy in the Last Hundred Years
A. makes B. causes C. make D. cause

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

59()

A.which
B.whom
C.those
D.who

单项选择题

Life Expectancy in the Last Hundred Years
A. against B. for C. to D. from

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

60()

A.symptoms
B.issues
C.problems
D.chances

单项选择题

Life Expectancy in the Last Hundred Years
A. And B. Therefore C. In addition D. Nevertheless

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

61()

A.rarely
B.openly
C.exactly
D.regularly

单项选择题

Life Expectancy in the Last Hundred Years
A. when B. yet C. however D. while

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

62()

A.from
B.into
C.on
D.of

单项选择题

Active in Old Age Keeps People Mobile
People over 70 who aren’t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.
These findings suggest that it’s very important to stay (51) in old age, study author Dr. Marjolein Visser told Reuters Health.
   "Physical activity in old age is as important (52) taking your medications(药物), " Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的) equipment. Your body will already (53) from regular walking."
Visser, a Dutch (荷兰的)scholar, explained that (54) active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance people need to walk up stairs, for instance.
To investigate how important exercise is to older adults, Visser’s team interviewed 3,075 men and (55) between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing (56) . The investigators followed the subjects for 4-1/2 years, noting who developed problems (57) and climbing stairs.
During the study, 34 percent of men and 47 (58) of women said they began to struggle with walking and climbing stairs. People (59) were inactive were twice as likely to report these problems as people who said they got regular exercise.
People who didn’t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing (60) walking and climbing stairs, relative to people who exercised (61) 。 Still, leading an active lifestyle appeared to protect people (62) problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学)Society.
Among people who were inactive, (63) who walked even a little bit such as brisk (轻快的)walking for a little over an hour per week - were at a lower (64) of mobility (可动性) problems."If you do not like to exercise or you cannot exercise (65) of serious health problems or functional limitations, do try to be as active as possible, " Visser advised.

63()

A.these
B.that
C.few
D.those

单项选择题

Life Expectancy in the Last Hundred Years
A. spread B. affected C. produced D. created

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Life Expectancy in the Last Hundred Years
A. poor B. weak C. older D. young

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
单项选择题

Life Expectancy in the Last Hundred Years
A. and B. leading to C. from D. with

A hundred years ago, life expectancy in developed countries was about 47; in the early 21st century, men in the United States and the United Kingdom can expect to live to about 74, women to about 80, and these (51) are rising all the time. What has brought (52) these changes When we look at the life (53) of peoplel00 years ago, we need to look at the greatest (54) of the time. In the early 20th century, there were the acute and often (55) infectious diseases such as smallpox. Many children died very young from these diseases and others, and the weak and elderly were always at risk.
In the (56) world these diseases are far (57) today, and in some cases have almost disappeared A number of (58) have led to this: improvements in sanitation and hygiene, the discovery and use of antibiotics, which (59) bacterial diseases much less dangerous, and vaccinations (60) common diseases. (61) , people’s general health has improved with improvements in our general environment: cleaner air, better means of preserving food, better and warmer housing, and better understanding of nutrition.
Genetically, we should all be able to live to about 85 but (62) people do live longer today, there are still some big killers around that are preventing us from consistently reaching that age. The problems that affect people today are the more chronic illnesses, such as heart disease and strokes, and those (63) by viruses, such as influenza and AIDS. Of course, cancer is a huge killer as well. In most cases these diseases affect (64) people, but there are worrying trends in the developed world with problems such as obesity (65) more heart disease and illnesses such as diabetes at younger ages.
The killers today can be classed as "lifestyle diseases", which means that it may be possible to halt their progress.
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