The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70% of the earth's surface is covered with water. But about 97% of that is sea water, or salt water. Man can only drink and use the other 3%—the fresh water from rivers, lakes, underground, and other sources. And we can not even use all of that. Even worse, some of it has been made dirty.

However, as things stand today, this fresh water is still enough for us. But our need for water is becoming larger and larger quickly—almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious worldwide water shortage (缺少) later on.

We all have to learn how to stop wasting our valuable water. One of the first steps is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system(下水道). From there it returns to sea or runs into underground places.

But even if every large city reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world is to remove the salt. If we take these steps we'll be in no danger of drying up.

1. The world is thirsty for water because .

A. man hasn't got enough food to eat

B. we haven't got enough fresh water

C. only 70% of the earth's surface is water

D. more water is sent into sewer systems

2. The underlined word “valuable” means .

A. much and salty B. fresh and enough

C. dear and useful D. clean and helpful

3.The best but the most difficult way to solve (解决) the water problem of the world is to .

A. remove the salt from sea water

B. make the water in cities clean

C. take water from underground

D. make the need for water smaller

4.What's the best title (标题) for this passage?

A. The Importance of the Water

B. The World's Water Problem

C. The Thirsty World

D. Fresh Water and Sea Water

完形填空 ,先通读下面的短文,掌握其大意,然后在每小题所给的四个选项中,选出可以填入相应空白处的最佳选项。

A mother planted many kinds of vegetables in her garden. One day, she said to her ________ , “Betty, come here. Look at all these little yellow marks (斑点)on the ________of the cabbages ( a kind of vegetable ). They are eggs of a kind of insect. They are very beautiful but very bad for cabbages. This afternoon you must ________ all the eggs on the leaves and kill them. In this way, you will help us have ________ , greener and bigger cabbages.”

Betty didn’t think she could do it ________ and in the end she forgot all about it. The mother was ill for a few days and ________work in her garden. When she was well, she took Betty with her to the garden to see the cabbages. To ________ surprise, the insects have eaten every leaf. When Betty saw this, she began to ________. Then her mother said to her, “We should never put off (推迟) what we have to do today till ________ . And you must learn to deal (处理) with the bad things ________ they are small, or it will turn into a big problem.”

1.A. son B. mother C. daughter D. sister

2.A. trees B. leaves C. grass D. top

3.A. see B. look at C. find D. look for

4.A. better B. worse C. thinner D. newer

5.A. at most B. at last C. at the moment D. at once

6.A. mustn’t B. couldn’t C. needn’t D. can’t

7.A. my B. our C. her D. their

8.A. cry B. shout C. run D. work

9.A. yesterday B. today C. tomorrow D. later

10. A. but B. while C. and D. before

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