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A. all of that B. as if it were C. fresh water supply D. in this field A. A limited【T13】______ B. so that it can be used
A. all of that B. as if it were C. fresh water supply D. in this field A. A limited【T13】______ B. so that it can be used
admin
2013-12-03
23
问题
A. all of that B. as if it were
C. fresh water supply D. in this field
A. A limited【T13】______
B. so that it can be used again just【T14】______from a spring
C. And we cannot even use【T15】______
D. Experiments have already been done【T16】______
The world is not only hungry, it is also thirsty for water. It seems there is plenty of water, but about 97% of this huge amount is sea-water, or salt water. Man can only drink and use the other 3% fresh water.【T17】______. because some of it is in the form of icebergs and glaciers. Even worse, some of it has been polluted.
At the moment, his small amount of fresh water is still enough for us. However, our need for water is increasing rapidly. Only if we take steps to deal with this problem now, can we avoid a severe worldwide water shortage later on. One of the useful steps we can take is to stop unlimited use of water.【T18】______, however, would have a bad effect on agriculture and industry.
In addition to stopping wasting our precious water, one more useful step we should take is to develop ways of reusing it.【T19】______. but only on a small scale.
Today, in most large cities, water is used only once and it eventually returns to the sea or runs into underground storage tanks. But it is possible to pipe water that has been used to a purifying plant. There it can be filtered and treated with chemicals【T20】______.
【T17】
选项
A、
B、
C、
D、
答案
C
解析
从原文来看,空白处前一句说的是“人们只能用占水资源3%的淡水”,空白处后面说的是“因为它的一些是以冰川和冰河的形式存在。更糟糕的是,它其中的一些还被污染了。”这里的it显然指的fresh water“淡水”,所以这个空格内应该填入与淡水有关的内容,所有选项C“我们不能使用全部的淡水”,在语义上与原文一致,所以正确答案为C。
转载请注明原文地址:https://kaotiyun.com/show/XRhi777K
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