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【判断题】
正常人中HSV的携带约占10％左右。A.
正确
B.
错误
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A.
They haven't devoted as much energy to medicine as to space travel.
B.
There are too many kinds of cold viruses for them to identify.
C.
It is not economical to find a cure for each type of cold.
D.
They believe people can recover without treatment.
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【简答题】阅读理解。 Many cultures have different ideas about why people catch colds. For example, in the United States, some people think that you can catch a cold if your feet get cold. So mothers tell small child...
【单选题】听力原文： Many people catch a cold in the springtime or fall. It makes us wonder if scientists can send a man to the moon, why can't they find a cure for the common cold? The answer is easy. There're actu...
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There are too many kinds of cold viruses for them to identify.
B.
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D.
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