首页
登录
职称英语
[originaltext] The world is not only hungry; it is also thirsty for water. T
[originaltext] The world is not only hungry; it is also thirsty for water. T
游客
2024-06-03
14
管理
问题
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 covered with water, But about 97% of this huge amount is sea water, or salt water. People can only drink and use the other 3%—the fresh 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 worse, some of it has been polluted.
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 useful step we should take is to develop ways of reusing it.
Today, in most large cities, water is used only once. But it is possible to pipe water that has been used to a purifying 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 reused its water, we still would not have enough. Where could we turn next? To the oceans! All we’d have to do to make use of the vast amount of sea water is to remove the salt. This salt- removing process is already in use in many parts of the world. So if we take all these steps, we’ll be in no danger of drying up!
选项
A、By filtering sea water.
B、By treating sea water with chemicals.
C、By taking salt out of sea water.
D、By drying up sea water.
答案
C
解析
信息明示题。由文章最后可知,要将海水变为淡水必须去除海水中的盐,所以C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3617450.html
相关试题推荐
[originaltext]W:Tom,canyoutellmewhatpercentageoftheUnitedStates’pop
[originaltext]W:Tom,canyoutellmewhatpercentageoftheUnitedStates’pop
[originaltext]W:Tom,canyoutellmewhatpercentageoftheUnitedStates’pop
[originaltext]Thenationalweathermapshowsahighpressureareaallalong
[originaltext]Thenationalweathermapshowsahighpressureareaallalong
[originaltext]Thenationalweathermapshowsahighpressureareaallalong
[originaltext]Howmanymendohousework?Recently,aEuropeancommissiontr
[originaltext]W:Hi,ProfessorHiggins.M:Hi,Julia.W:Wouldyoubeabletoh
[originaltext]M:Jessica,isthatyou?Ofalltheplacestorunintoeachother
[originaltext]AbrahamLincolnwasborninKentuckyonFebruary12,1809.Wh
随机试题
Oldagehasalwaysbeenthoughtofastheworstagetobe;butitisnot【B1】
WithinfifteenyearsBritainandothernationsshouldbewellontheirwayt
[originaltext]W:Hey,Mark,couldyoutellmeaboutthefirstjobyoueverhad?
PresentattheChristmaspartywerethetwoprincessesandtheir______husbands
Thereceptionist______wehandedtheformspointedoutthattheyhadnotbeenpro
人工流产术后感染的临床表现不包括A.体温升高 B.下腹疼痛 C.白带浑浊
下列疏散出口的检查结果中,不符合现行国家消防技术标准的是(??)A.容纳200人
关于招标公告或资格预审公告,下列说法不正确的是()。A、进行资格预审的公开招标项
"药品不良反应"的正确概念是A.正常使用药品出现与用药目的无关的或意外的有害反应
下列各项中属于计算机病毒防范措施的有()。A:规范使用U盘的操作B:减少盗版软
最新回复
(
0
)