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of our homes.Farmers use it to grow vegetables and crops like rice.Factories use it a lot.
Since the 1950s,people have.used more and more water.Scientists worry that soon there
won't be enough water for us,as well as for the animals and plants.
What can we do to help Use water wisely.Having enough water isn't our only
problem.We also need it clean.
Right now,ships and factories are putting waste into seas,rivers,and so on.The pollution
(污染)can make the water too dirty.It can also harm(危害)fish and other water living lives,
So we must do something to stop pollution.
根据材料内容选择最佳答案。
26.How does the writer begin the passage
A.By giving an example
B.By telling stories
C.By asking a question
D.By using pictures
27.Over of our body weight is water.
A.75%
B.50%
C.25%
D.100%
28。The second paragraph(段落)mainly talks about
A。where water is
B.why we should save water
C.what water is used for
D.how we should save water
29。What does the underlined sentence(画横线句子)“We also need it clean.”mean
A.We also need to keep water clean.
B.We also need water that looks clean.
C.We also need to find clean water.
D.We also need to waste clean water.
30.The purpose of this passage is
A.to advise people to drink water
B.to ask people to protect and save water
C.to show the problem of water pollution
D.not to worry when we waste water
D
The nature has a great water system ()31.Water in the air gets cold,makes clouds
and then forms water drops.32.Rainwater goes into rivers,lakes and oceans.When it is
sunny,water goes up into the sky,forms clouds and then it rains again.
33.It's under the ground,in the ocean and in the sky.The earth is full of water.People
can use water to carry goods and travel around the world.34.
Water is so important to us,but many people are polluting (it.They throw rubbish
into lakes,rivers and seas.35.We must do something for them and start to save water.If not,
the iast drop of clean water will be our tear drop
2

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