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  3. A Thirsty World The world is not only hungry; it is also thirsty for water. This may seem strange to you since nearly 75% of

A Thirsty World The world is not only hungry; it is also thirsty for water. This may seem strange to you since nearly 75% of

admin2022-01-21  2
问题                                                                   A Thirsty World
    The world is not only hungry; it is also thirsty for water. This may seem strange to you since nearly 75% of the earth’ s surface is【B1】________ with water. But about 97% of this huge amount is sea-water, or salty water. Man can only drink and use the other 3% —the【B2】________ water that comes from rivers, lakes, underground, and other sources. And we cannot even use all of that, because some of it is in the form of icebergs and glaciers. Even【B3】________ , some of it has been polluted.
    At the moment, this small amount of fresh water is still enough for us. However, our demand for water is increasing【B4】________ . Only if we take steps to deal with this problem now can we avoid a severe worldwide water【B5】________later on.
    In addition to stopping wasting our precious water, one useful step we should take is to【B6】________ ways of reusing it.
    Today, in most large cities, water is used only【B7】________ and it eventually returns to the sea or runs into underground storage tanks, But it is【B8】________ to pipe water that has been used to a purifying (净化) plant, There it can be filtered and treated with chemicals so that it can be used again just as if it were fresh from a spring.
    But even if every large city purified and【B9】________ its water, we still would not have enough. Where could we turn next? To the oceans I We can make use of the vast amount of sea-water by removing the salt. This salt-removing【B10】________ is already in use in many parts of the world.
    A. used               B. fresh              C. develop            
    D. process            E. possible           F. shortage
    G. worse              H. reused             I. rapidly
    J. covered            K. new                L. once
【B2】
选项
答案B
解析 此处需要填形容词作定语修饰后面的名词water。fresh water属于固定搭配，意思是“淡水”。上句说地球上的大部分水都是海水或成水，那么仅剩的3％的水是淡水，因此此题应选B。
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