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
70
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:https://www.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
Namedafteranex-GovernorofNewSouthWales,SydneyistheState’scapital
[originaltext]AmandaLaMunyonlivesinOklahoma.Sheis14yearsold.Sheha
高程控制测量应采用()测量。A.三边测量 B.水准测量 C.经纬测量 D.
真空断路器主要用于()电压等级。A.3KV B.10KV C.110KV
宜采用生活污水与生活废水分流的排水系统,以下哪条错误?()A.高级宾馆排水系
可持续增长率的假设条件有()。A.公司的资产周转率将维持当前水平 B.公司
构成基金的要素有多种,因此可以依据( )的差异对基金进行分类。 Ⅰ.运作方式
下列对作家作品的解说有误的一项是()。A、在我国古代文学史上,有许多名家
下列哪些检查支持血管内溶血A.游离血红蛋白增高 B.血清结合珠蛋白降低 C.
下列焊接前检验内容中,不属于检查技术文件的内容是()。A.焊工持有焊接作业
最新回复
(
0
)