首页
登录
职称英语
Because humans are at the top of the food chain, they are particularly vulner
Because humans are at the top of the food chain, they are particularly vulner
游客
2023-09-24
48
管理
问题
Because humans are at the top of the food chain, they are particularly vulnerable to the effects of nondegradable (不可能降解的)pollutants. This was clearly illustrated in the 1950s and 1960s when residents living near Minamata Bay, Japan, developed nervous disorders, shaking, and paralysis(瘫痪,麻痹) in a mysterious widespread. Over 400 people died before authorities discovered that a local industry had released mercury(水银,汞) into Minamata Bay. This highly toxic element stored up in the bodies of local fish and eventually in the bodies of people who consumed the fish. More recently research has revealed that many chemical pollutants are harmful to the human beings.
Pollution also has a dramatic effect on natural resources. Ecosystems such as forests, wetlands, and rivers perform many important services for the earth’s environment. They improve water and air quality, provide living places for plants and animals, and provide food and medicines. Any or all of these ecosystem functions may be impaired or destroyed by pollution. Moreover, because of the complex relationships among the many types of organisms and ecosystems, environmental pollution may have far-reaching consequences that are not immediately obvious or that are difficult to predict. For instance, scientists can only point out some of the potential impacts of the decrease of the ozone layer(臭氧层), the protective layer in the atmosphere that shields the earth from the sun’s harmful rays.
选项
A、Pollution
B、Impact of Pollution
C、Affect of Pollution
D、Pollutants
答案
B
解析
可采用排除法。D项Pollutants(污染物)与整篇文章内容不符应排除。C项affect为一个动词,用在这儿是错误的,可以排除。在剩下的A、B两项中,A项强调污染;B项强调污染的影响。根据文章两段的主要侧重面来看还是强调影响,比如一段中人吃了受污染的鱼之后死亡;二段中臭氧层等等,讲的都是影响。
转载请注明原文地址:http://tihaiku.com/zcyy/3041721.html
相关试题推荐
[originaltext]M:Whydoyouwanttohavethisjob?W:Becauseitwillbringme
WhydidMr.Richards’relativesprefertostayinhishouse?Becausetheymight
WhydidMr.Richards’relativesprefertostayinhishouse?Becausetheymight
WhydidMr.Richards’relativesprefertostayinhishouse?Becausetheymight
Weappreciate______(work)withhim,becausehehasagoodsenseofhumor.worki
Whydomoremiddle-agedadultshavetotakecareoftheiragingparents?Because
WhyisMr.ShinthankfulforMr.Marley?BecauseMr.Marleysentacopyofthe_
WhyisMr.ShinthankfulforMr.Marley?BecauseMr.Marleysentacopyofthe_
WhyisMr.ShinthankfulforMr.Marley?BecauseMr.Marleysentacopyofthe_
Thereason______Ican’tcomeisthatmymotherisillA、becauseB、whyC、asD、fo
随机试题
SummaryListentothepassage.Forquestions26—30,completethenotesusingno
That’s______Iwanttosay.A、allwhatB、whatC、allwhichD、whatthatB
WhatIfYouCouldLearnEverythi
A.复制 B.转录 C.反转录 D.翻译 E.基因表达以mRNA为模板,
进行倒闸操作时,监护人宣读操作项目,操作人复诵。监护人确认无误。发出()执
DD。左右两图中都有三角形、正方形、圆形以及横线、竖线、十字线,因此,只有选项C才能保证右图有所有图形。
表3-1是2006年中国31个主要城市年平均相对湿度的数据(单位:%)。
在分析大宗商品基差的变动规律中,基差研究包括()。A.收集商品基差数据 B.
李某花2000元购得某省M公司生产的苦茶一批,发现其备案标准并非苦茶的标准,且保
(2019年真题)某施工单位拟投资一项目,在投资总额和年收益不变的情况下,四个备
最新回复
(
0
)