首页
登录
职称英语
[originaltext] Throughout history man has changed his physical environment i
[originaltext] Throughout history man has changed his physical environment i
游客
2023-07-07
51
管理
问题
Throughout history man has changed his physical environment in order to improve his way of life. With the tools of technology he has altered many physical features of the earth. He has transformed wood lands into farmland, and made lakes and reservoirs out of rivers for irrigation purposes or hydroelectric power. Man has also modified the face of the earth by draining marshes and cutting through mountains to build roads and railways.
However, man’s changes to the physical environment have not always had beneficial results. Today, pollution of the air and water is an increasing danger to the health of the planet. Each day thousands of tons of gases come out of the exhausts of motor vehicles; smoke from factories pollutes the air of industrialised areas and the surrounding areas of countryside. The air in cities is becoming increasingly unhealthy.
The pollution of water is equally harmful. In the sea, pollution from oil is increasing and killing enormous numbers of algae(a very simple plant without stems or leaves that grows in or near water), fish and birds. The whole ecological balance of the sea is being changed. The same problem exists in rivers. Industrial wastes have already made many rivers lifeless.
Conservationists believe that it is now necessary for man to limit the growth of technology in order to survive on earth.
Questions 23 to 25 are based on the passage you have just heard.
23. What is the purpose of man changing his physical environment?
24. When is the ecological balance of the sea lost?
25. Who would most probably disagree with conservationists?
选项
A、When the ecological balance of the river is lost.
B、When people consume more fish than they used to.
C、When large numbers of algae, fish and birds are killed.
D、When the production of marine petroleum is increased.
答案
C
解析
短文中提到The pollution ofwater...killing enormous numbers of algae...fishand birds.The whole ecological balance of the seais being changed.由此可知,当海水被污染,大批海洋生物死去,海洋的生态平衡也就被破坏了,故答案为C)。
转载请注明原文地址:https://tihaiku.com/zcyy/2815040.html
相关试题推荐
[originaltext]AsktheaverageAmerican,"Whatisfreedom?"Youwillprobabl
[originaltext]WhenColonelHarlandSandersretiredattheageof65,hehad
[originaltext]CATVisashortwayofsaying"communityantennatelevision."
[originaltext]CATVisashortwayofsaying"communityantennatelevision."
[originaltext]W:We’vegotalotofworktodonow,buttakeyourtimeoverthi
[originaltext]W:We’vegotalotofworktodonow,buttakeyourtimeoverthi
[originaltext]M:Hey,Linda.Lookslikeyougotsomesunthisweekend.W:Yeah,
[originaltext]M:Hey,Linda.Lookslikeyougotsomesunthisweekend.W:Yeah,
[originaltext]W:Haveyoufinishedreadingmyresearchreport?Iputitonyour
[originaltext]W:Haveyoufinishedreadingmyresearchreport?Iputitonyour
随机试题
(浙江大学2010年试题)ThecharacterofEuropeaneducationdemandsthatthestudentd
______fromendlesshomeworkonweekends,thestudentsnowfindtheirownactivi
Whatistheeffectivewaytopreventtheburnoutofyoungathletes?[originaltex
A代入计算得a=-1.
在我国,交流特高压(UHV)定义为()及以上电压。A.1000kV B.80
住宅集中热水供应系统配水点的热水温度不应低于()。A.40℃ B.45℃
当事人如果认为约定的违约金数额过高或过低的,可以()。A.单方面予以适当增加或减
医师李某,经考核合格,取得了麻醉药品和第一类精神药品的处方资格A、他可以在医疗机
布鲁姆的教育目标分类对认知领域做了层次的划分。“聆听音乐时、能够判断出音乐的节拍
细胞因子测定的临床应用是A.特定疾病的辅助诊断B.评估机体的免疫状态,判断治疗效
最新回复
(
0
)