首页
登录
职称英语
[originaltext] The world is not only hungry; it is also thirsty for water.
[originaltext] The world is not only hungry; it is also thirsty for water.
游客
2023-09-09
56
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 flesh 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:http://tihaiku.com/zcyy/2998472.html
相关试题推荐
[originaltext]Asilverdollarisnotworthadollar--norisanyothersilve
[originaltext]Asilverdollarisnotworthadollar--norisanyothersilve
[originaltext]Theordinaryraindropisamightyearthmoverwithsufficient
[originaltext]ThemenwhowriteTVWesternswouldbehardputtocreateac
[originaltext]M:I’mlongingtohearaboutyourtourofAmerica,Jenny.Youmus
[originaltext]M:I’mlongingtohearaboutyourtourofAmerica,Jenny.Youmus
[originaltext]M:Lookatthosecolorfulbirdsoverthere.Ithinkyoucanteach
[originaltext]M:Lookatthosecolorfulbirdsoverthere.Ithinkyoucanteach
[originaltext]M:Lookatthosecolorfulbirdsoverthere.Ithinkyoucanteach
[originaltext]M:Lookatthosecolorfulbirdsoverthere.Ithinkyoucanteach
随机试题
Ifwomenaremercilesslyexploitedyearafteryear,theyhaveonlythemselve
WhichwordisnotusedbyNorberg-HodgetodescribetheLadakhipeople?[br][o
"Musthecleantheroombeforeclass?""No,he______."A、needn’tB、mustn’tC、won
Whatproductsarethetwolettersdealingwith?[br]Whyaretheproductspopula
Yourkindnessingiving______totheconsiderationoftheaboveproblemwillbe
关于装饰装修工程的说法,正确的是( )。A.因装饰装修工程设计原因造成的工程变
ATM信元的组成字节数为()。A.35 B.43 C.53 D.63
服毒后的洗胃处理,下列哪项不正确A.一般在服毒后6小时内洗胃有效 B.超过6小
房地产经纪机构在代理销售商品房时可以收取()。(2012年真题)A.佣金
下述关于吲哚美辛作用特点的描述,正确的是A.最强的PG合成酶抑制剂之一 B.对
最新回复
(
0
)