4. You should finish the work with three (步骤).
举一反三单元同步过关卷系列答案科目：初中英语 来源： 题型：
The world is not only hungry,but also thirsty.This may s 1 strange to you,since nearly 70% of the earth's surface is covered w 2 water. But about 97% of that is sea water,or salt water. Humans can only drink and u 3 the other 3%一the fresh water from rivers,lakes,the underground and o 4 sources. And we cannot even use all of that. Even worse,some of it has been polluted.
However as things stand today? this fresh water is still e 5 for us. But our need for water is b 6 larger and larger —almost day by day. We should take s 7 to do with this problem now and in this w 8 we can get away from a serious water shortage (^fc^) later on.
We all have to learn how to s 9 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 into a sewer system (排污系统). From there it r 10 to the sea or runs into underground places.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
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() 1. We should try to save energy and produce pollution.
A. more;less B. less;more C. more;fewer D. most;least
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() 5. Don’t forget the floor before you leave the classroom after school.
A. sweep B. sweeping
C. to sweep D. to be swept
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() 6. (2015 •雅安) Trees on both sides of the road next year.
A. will plant B. will be planted C. are going to plant D. are planted
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() 10. The first World Earth Day to educate us to protect our planet.
A. celebrates B. celebrated C. is celebrated D. was celebrated
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