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
2024-06-01
29
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 industrialized 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 is 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.
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
选项均提到了海洋生物,表明问题与此有关。短文最后提到,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项。
转载请注明原文地址:https://tihaiku.com/zcyy/3614781.html
相关试题推荐
[originaltext]W:Iwanttoregisterforthismathematicscourse.M:I’msorryr
[originaltext]W:Iwanttoregisterforthismathematicscourse.M:I’msorryr
[originaltext]M:Whatdoyouthink?AmIOK?W:Well,thereissomeinformation
[originaltext]M:Whatdoyouthink?AmIOK?W:Well,thereissomeinformation
[originaltext]M:Whatdoyouthink?AmIOK?W:Well,thereissomeinformation
[originaltext]M:Whatdoyouthink?AmIOK?W:Well,thereissomeinformation
[originaltext]M:Whatdoyouthink?AmIOK?W:Well,thereissomeinformation
UnitedStatesgovernment,andtheAmericanpeople.Itshistory,andthehist
UnitedStatesgovernment,andtheAmericanpeople.Itshistory,andthehist
UnitedStatesgovernment,andtheAmericanpeople.Itshistory,andthehist
随机试题
Lazinessisasin.Everyoneknowsthat.Wehaveprobablyallhadlecturespo
国家电网有限公司明确提出,要以品牌形象展示内在品质,以责任表率展现道德力量,让新
上颌体分为四壁一腔,其四壁是指() A.前壁、后壁、上壁、内壁
课题:搜索引擎的使用 教案背景:“搜索引擎的使用”源于高一信息技术基础必修教材
从所给的选项中,选择最合适的填入问号处,使之呈现规律性: A.如上图所示 B
某公司正考虑建设一个新项目。根据市场调查和财务部门测算,项目周期为5年,项目现金
城乡规划主管部门核发的规划许可证属于行政许可的()许可类型。A.普通 B
对仲裁裁决不服的,当事人可以自收到裁决书之日起()日内向法院提起诉讼,通过法院审
以下药品中,容易进入乳汁中并可抑制婴儿甲状腺功能的是A.甲睾酮 B.甲硝唑
根据《水利水电工程标准施工招标文件》,关于评标委员会下列说法正确的有()。A.
最新回复
(
0
)