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  Napoga  is a 12—year---old  girl in Ghana, Africa. It is hard for her family to get clean water . Every morning , she leaves home at half past five to get clean water for her family in a village far away . It takes her six hours to get enough clean water for daily cooking and drinking. She has no time to go to school or to play with her friends. Millions of people in the world are like Napoga . They can’t get enough clean water to keep healthy.
Earth Day is April 22. But on all other days, we must also remember it. The water we use is the most important natural resource(自然资源)on the earth.
Water covers 70 perent of the earth’s surface (表面). But most of that is sea water. We can’t use it for very many things.  Fresh water covers only one percent of the earth’s surface.
You probably feel lucky that your life isn’t as hard as Napoga’s . But that doesn’t mean you don’t have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers , lakes , and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish , too. Now, thirty-four percent of all kinds of fish are dying out.
How do cars and factories make our water dirty? First, they pollute the air. Then , when it rains, the rain water comes down and makes our drinking water dirty. Dirty rain, called acid rain(酸雨), is also bad for plants ,animals and buildings.
Scientists say that in 30 years, more than half of the people in the world won’t have enough clean water. We have to learn how to save more water for ourselves  and our children. Here is some advice for saving water:
● Turn off the water while you brush your teeth. You can save as much as 450liters(升)each month.
● Leaky taps (漏水的龙头)waste a lot of water. Fix them right away.
●You can easily cut your 10—minute showers in half---and you’ll be just as clean.
●When you wash dishes, don’t let the water run.
●Only wash clothes when you have a lot to wash. If your washing machine isn’t full , you are wasting water!
根据材料内容,选择最佳答案,并将其标号填入题前括号内。
小题1:Every morning Napoga went to get clean water _________.
A.before she went to school
B.after she finished school
C.without going to school
D.after she played with her friends
小题2:On the earth, _______________.
sea water is  more widely used than fresh water
B.there is very little water for our living
C.there is 71 percent of fresh water
D.we don’t need to worry about water
小题3:Acid rain____________________________.
A.is only bad for living things.
B.can be produced in factories
C.doesn’t do harm to people , but it’s bad for plants, animals and buildings.
D.doesn’t just do harm to human beings but to animals, plants and buildings.
小题4:Which of the following wastes water?
A.We need ten minutes if we want a clean shower.
B.We should put in enough clothes when we wash them in washing machines.
C.You can keep yourself clean by having a shower for five minutes.
D.Don’t let the water run when we brush our teeth and wash dishes.
小题5:What’s the main idea of the passage?____________.
A.Something must be done to prevent water from being polluted.
B.Clean water means much to human beings and living things around us.
C.It’s time to take care of the water we use.
D.Water is the most important natural resource on the earth.

小题1:C
小题2:B
小题3:D
小题4:A
小题5:C

试题分析:短文大意:这篇短文主要讲述了地球上的水资源短缺问题,告诉我们应该行动起来节约用水,并就此提出了几点建议.
小题1:段落大意题。根据短文第一段描述,可知Napoga 每天早晨都去打水,因此没有时间去学校了。故选C。
小题2:段落大意题。根据短文第三段描述,可知地球上可用来生存的水资源很少。故选B。
小题3:细节理解题。故短文第五段Dirty rain, called acid rain(酸雨), is also bad for plants ,animals and buildings.描述,可知酸雨不但对人类有危害,而且对动物,指物和建筑物都有危害。故选D。
小题4:细节理解题。根据You can easily cut your 10—minute showers in half---and you’ll be just as clean.描述,可知洗淋浴用10分钟是一种浪费水的行为。故选A。
小题5:主旨大意题。阅读短文可知,本文主要讲述了地球上的水资源短缺的问题,号召我们行动起来保护水资源。故选C。
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