2. 外语
  3. A desert is a land【C1】______plants, animals, and people cannot get all the water they need because the climate is【C2】______too d

A desert is a land【C1】______plants, animals, and people cannot get all the water they need because the climate is【C2】______too d

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问题    A desert is a land【C1】______plants, animals, and people cannot get all the water they need because the climate is【C2】______too dry or too cold.【C3】______deserts have【C4】______than 10 inches of rainfall a year. There may be months or even years between one rainstorm and【C5】______. The rainwater quickly runs【C6】______the land, sinks into the sand or evaporates into the dry air.
   No matter how dry a desert may be, it is【C7】______to man. In some of the driest regions【C8】______has found valuable minerals. The discovery of petroleum, in particular,【C9】______great changes to the deserts. Oil is now the most important export of several desert countries in the Middle East, and it has been【C10】______in the Western Sahara. Saudi Arabia, Iraq and Kuwait are【C11】______called oil kingdoms.
   Man has changed the desert in many ways to make it a【C12】______place to live in. But the greatest problem of the deserts【C13】______. That problem is【C14】______water over large areas. Man is turning to the sea【C15】______water.
   Scientists are constantly【C16】______methods of【C17】______the salt from water so that it can be used in industry and agriculture. This is called desalinization. Perhaps the use of atomic power will make desalinization less expensive in the future. Some people believe that man will one day be able to【C18】______the climate and produce rainfall over the desert when it is wanted. This would be a simple【C19】______to the water problem, but we【C20】______much more about the atmosphere before that will be possible.
【C7】
选项 A、rarely worthless
B、nearly useless
C、almost of no use
D、rarely invaluable
答案A
解析 本题考查词义辨析。根据下文我们知道这一段讲的是沙漠的矿藏，所以此处的意思是“无论沙漠多么干旱，它对人类也有利用价值”。A选项rarely worth less是双重否定表示肯定，意思是“不是没有价值的”；B选项nearly useless意为“几乎没用的”；C选项almost of no use意思同B；D选项rarely invaluable，invaluable意思是“无价的”，又加否定词rarely，就变成“几乎没有价值了”。因此答案选A。
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