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Have you ever drunk the water directly from a ? I’m sure your answer is ‘No’. Perhaps you may have the water from a well (井), or from a tap before. , as I know, most of you only drink hot water or the bottled water from a shop now.

But things were quite twenty years ago. At that time, all the small rivers us were very clear and the water was very clean. If you were , you could just bend down by the riverside and drink some water with your hands. It was cool and sweet. How it was! But all this was in the past. Things a lot. Some water is not even for us to wash hands. What a !

1.A. bottle B. sea C. river D. lake

2.A. carried B. tried C. cleaned D.polluted

3.A. Yet B. Though C. Since D. However

4.A. same B. easy C. different D. difficult

5.A. between B. by C. among D. around

6.A. thirsty B. hungry C. tired D. sleepy

7.A. surprising B. pleasant C. terrible D. dirty

8.A. have got B. have turned C.havechanged D.have exchanged

9.A. dirty enough B. clear enough C. warm enough D. clean enough

10.A. pity B. shame C. problem D. matter

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