问答题

白蚁的防治方法有( )等。

A.烟熏法
B.药物灭杀法
C.诱杀法
D.生物防治法
E.挖巢法
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问答题

Each day, 50,000 shiny, fireenginered apples work their way through a sprawling factory in Swedesboro, N.J. Inside, 26 machines wash them, core them, peel them, seed them, slice them and chill them. At the end of the line, they are deposited into little green bags featuring a jogging Ronald McDonald.
From there, the bags make their way in refrigerated trucks to thousands of McDonald's restaurants up and down the Eastern Seaboard. No more than 14 days after leaving the plant, the fruit will take the place of French fries in some child's Happy Meal. The apple slices, called Apple Dippers, are a symbol of how McDonald's is trying to offer healthier food to its customers? And to answer the many critics who contend that most of its menu is of poor nutritional quality.
It remains to be seen whether these new offerings will assuage the concerns of public health officials and other critics of McDonald's highly processed fat and calorie—laden sandwiches, drinks and fries. So far, they have notat least not entirely. But this much is already clear: Just as its staple burgerandfries meals have made McDonald's the largest single buyer of beef and potatoes in the country, its new focus on fresh fruits and vegetables is making the company a major player in the $80 billion American produce industry.
The potential impact goes beyond dollars and cents. Some people believe that McDonald's could influence not only the volume, variety and prices of fruit and produce in the nation but also how they are grown.
According to the text, what will be found in some children's Happy Meal instead of French fries?
A.Apple pies.
B.Hamburger.
C.Apple dippers.
D.Apple flavor French.

A.J.
B.
C.
D.
E.
According
F.Apple
G.
B.Hamburger.
C.Apple
H.
D.Apple
问答题

Space is a dangerous place, not only because of meteors (流星), but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential, for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation (辐射) from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space. The unit of radiation is called 'rem'. Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage — a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed (畸形的) children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in space laboratory. Rugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.
According to the first paragraph, the atmosphere is essential to man in that it ______.
A.protects him against the harmful rays from space
B.provides sufficient light for plant growth
C.supplies the heat necessary for human survival
D.screens off the falling meteors

A.
B.1
C.
According
D.
A.protects
E.provides
F.supplies
G.screens
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