阅读理解

a．阅读短文，从括号中选择正确的单词填到横线上

　　 1 (By, For, Of) all the things we eat and drink, water is the 2 (most, more, much) important. Not 3 (few, much, many) people understand this but it is true. The human body can go without food for a long time, but two 4 (for, or, and) three days without water usually men will 5 (death, dead, die).

　　Many people don't understand how 6 (little, many, much) water the human body needs to work properly and many people do not drink 7 (few, enough, some), especially in hot days. Most people drink 8 (so, when, before) they are thirsty, but in fact, we often need more water, especially if we have been taking exercises.

　　A man's body is about 70% water. If we do not have 9 (all, enough, some) water, we feel 10 (tired, fine, hard) and may become ill.

b．阅读短文，判断对错

1．Water is the most important of all the things we eat and drink.

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2．All of the people understand how much water the human body needs to work.

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3．We only need water when we are thirsty.

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4．A man's body is about 70% water.

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5．If we don't drink water for 7 days, we can still live.

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