首页
登录
职称英语
[originaltext] The world is not only hungry; it is also thirsty for water. Th
[originaltext] The world is not only hungry; it is also thirsty for water. Th
游客
2023-09-01
41
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、People can use nearly 75 percent of it.
B、People can use about 97 percent of it.
C、People can use exactly 3 percent of it.
D、People can use less than 3 percent of it.
答案
D
解析
What percentage of the earth’s water can people actually use?
综合推断题。文章提到People can only drink and use the other 3%,再结合后面提到的we cannot even use all of that可知,由于有的水是以冰山和冰河的形式存在的,还有的水被污染了,所以人类能利用的水实际上不到3%,所以D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2975877.html
相关试题推荐
[originaltext]WilliamShakespearewaschristenedinthemarkettownofStra
[originaltext]WilliamShakespearewaschristenedinthemarkettownofStra
[originaltext]I’dliketosharewithyoutodaymyexperiencewithanewap
[originaltext]I’dliketosharewithyoutodaymyexperiencewithanewap
[originaltext]WhenMidoriwastwoyearold,sheoftenclimbedontothepiano
[originaltext]Recently.amanwhowasalwaysi13goodhealth,spentaweek
[originaltext]Recently.amanwhowasalwaysi13goodhealth,spentaweek
[originaltext]Climateresearchersstilldonotagreeonwhethertheearth
[originaltext]Climateresearchersstilldonotagreeonwhethertheearth
[originaltext]W:I’mgoingtoleaveworkearlytoday.There’sadebatethiseve
随机试题
[audioFiles]audio_eufm_j62_001(20082)[/audioFiles]A、Mr.Johnisverykind.B、Th
Paststudieshavesuggestedtheamygdale(扁桃体)isimportantin(26)______respon
支付宝(Alipay)是中国最大的第三方在线支付平台,由阿里巴巴集团(AlibabaGroup)于2004年创建。截至2012年底,支付宝拥有用户超过
某工程包括A、B、C、D、E、F六个作业,分别需要5、7、3、4、15、1
A.灌注压突破 B.皮毛窦 C.内听道扩大及早期耳聋、耳鸣 D.咖啡样色素
下列各项中,不符合内部牵制的要求的是()。A、出纳人员管票据 B、出纳人员
收敛固涩宜煅用,可以治疗胃痛泛酸的中药是A.天麻 B.牡蛎 C.石决明 D
充血性心力衰竭和水钠潴留的病人,禁用以下哪种溶液灌肠A、0.9%氯化钠溶液 B
行政手段是我国证券市场监管的主要手段,其约束力强。()
某简支空心板梁桥桥面标高21.75m,板厚60cm,桥面铺装厚12cm,设计洪水
最新回复
(
0
)