The world is not hungry, but it is thirsty. It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of water. Why? Because about 97% of water on the earth is sea water which we can’t drink or use for watering plants directly. Man can only drink and use the 3% the water that comes from rivers and lakes. And we can’t even use all of that, because some of it has been polluted.
Now more water is needed. The problem is: can we avoid a serious water shortage later on? First, we should all learn how to save water. Secondly, we should find out the ways to reuse it. Scientists have always been making study in this field. Today, in most large cities water is used only once and then runs to the sea or rivers. But it can be used again. Even if every large city reused its water, still there would not be enough. What could people turn to next?
The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive, but it’s already in use in many parts of the world. Scientists are trying to find a cheaper way of doing it. So you see, if we can find a way out, we’ll be in no danger of drying up.
小題1:The world is thirsty because ___________.
A．3/4 of the earth is covered with water
B．we have enough sea water
C．we haven’t used all the water in rivers and lakes
D．a(chǎn)bout 97% of water on the earth can’t be drunk or used for watering plants directly
小題2:Which of the following is TRUE?
A．3% of drinkable water on the earth is from rivers and lakes.
B．75% of water on the earth is in the sea.
C．97% of the earth is covered with water.
D．3% of water on the earth is sea water.
小題3:From the passage we learn that __________.
A．if every city reuses its water, we’ll be in no danger of drying up
B．man can only drink and use about 25% of water on the earth
C．today in most large cities water is used only once
D．water can be used only once

小題1:D
小題2:A
小題3:C

試題分析：
小題1:D 細節(jié)題。根據(jù)第一段2,3行Because about 97% of water on the earth is sea water which we can’t drink or use for watering plants directly說明D正確。
小題2:A 細節(jié)題。根據(jù)第一段第4行Man can only drink and use the 3% the water that comes from rivers and lakes.說明A正確。
小題3:C 細節(jié)題。根據(jù)第二段3,4行Today, in most large cities water is used only once and then runs to the sea or rivers.說明C正確。
點評：文章介紹了世界上水緊缺的問題，并在文章第二段提出了解決的方法。本文集中考查了細節(jié)題，要求考生仔細閱讀全文，做好相應(yīng)的標志，以提高閱讀的效率和速度。
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科目：高中英語 來源：不詳 題型：完形填空

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A．a(chǎn)tB．betweenC．ofD．on
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