首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Throughout history man has changed his physical environment in order to improve his way of life. With the tools of technolog
Throughout history man has changed his physical environment in order to improve his way of life. With the tools of technolog
admin
2014-09-19
76
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 woodlands 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 (水藻),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.
The ecological balance of the sea is lost when______.
选项
A、people consume more fish than they used to
B、the ecological balance of the river is lost
C、large numbers of algae, fish and birds are killed
D、the production of marine petroleum is increased
答案
C
解析
本题是一道具体细节题。问何时海洋的生态平衡就丧失了。利用查阅式阅读法,我们可以在文章第四段中找到相关信息。这段主要介绍了淡水污染给环境带来的危害。由于石油污染的增加,海中大量海藻、鱼和鸟死亡,海洋的生态平衡遭到破坏。同样的问题也存在于河流里,工业污水已使许多河流了无生机。因此,本题的正确答案应是C“当大量的海藻、鱼类和鸟类被杀死的时候”。A“人们比以前吃鱼吃得多了”,B“河流失去生态平衡”,D“海洋石油生产增加”,这三个选项都不是本题的正确答案。
转载请注明原文地址:https://kaotiyun.com/show/pmWO777K
0
在职攻硕英语联考
相关试题推荐
Webbrowsers!Interactivesoftware!There’salotofnewtechnologytalkgoingoninpublicrelationsthesedays,andit’scomin
Webbrowsers!Interactivesoftware!There’salotofnewtechnologytalkgoingoninpublicrelationsthesedays,andit’scomin
Whenyouthinkofthetremendoustechnologicalprogresswehavemade,it’samazinghowlittlewehavedevelopedinotherrespect
Withallthewars,fightingandsadnessintheworldtoday,it’snotonlynecessary,butalsoessentialtohaveagoodsenseof
Nomodernindustrialenterprisescan______foramomentwithoutrulesandsetprocedures.
A、Andy’sfriendsgotbettergrades.B、Andydidn’tworkashardasothers.C、Andyfelldownfromthestair.D、Andydidn’tgetthe
ToproducetheupheavalintheUnitedStatesthatchangedandmodernizedthedomainofhighereducationfromthemid-1860’stot
MoneymaynotbeflowingmuchinThailand’scapitalthesedays,butsomethingmoreunlikelyistraffic.Motoristsliketojoket
Foryears,Europeanshavebeenusing"smartcards"topaytheirwaythroughtheday.Theyusetheminshopsandrestaurants;plu
"Youexpectyourfriendstobeinclinedtoseeyouinapositivemanner,buttheyarealsokeenobserversofthepersonalitytra
随机试题
成人骨骼总数是
A、心肺气虚B、肝脾不调C、肝火犯肺D、肺肾阴虚E、心肾不交用滋补肺肾法可治疗()
属于二级保护野生药材物种的是()
甲公司在实施全面风险管理过程中,注重加强法制教育,增强董事、监事、经理及其他高级管理人员和员工的法制观念,严格依法决策、依法办事、依法监督。甲公司的上述作法所涉及的内部控制要素是()。
行政机关必然只具有行政主体地位。()
对文中加点词语“纳米科技的核心和本质”的具体含义理解正确的一项是______。根据文章所给的信息,以下各项错误的是______。
阅读以下说明,回答问题。[说明]2007年春,ARP木马大范围流行。木马发作时,计算机网络连接正常却无法打开网页。由于ARP木马发出大量欺骗数据包,导致网络用户上网不稳定,甚至网络短时瘫痪。ARP木马利用皿协议设计之初没有任何验证功能这一漏洞
地址编号从80000H到BFFFFH且按字节编址的内存容量为(1)KB,若用16K×4bit的存储器芯片构成该内存,共需多少(2)片。(2)
打开考生文件夹下的演示文稿yswg.pptx,按照下列要求完成对此文稿的修饰并保存。第三张幻灯片版式为“图片与标题”,标题为“花生利于补充抗氧化物质”,将第五张幻灯片左侧内容区全部文本移到第三张幻灯片标题区下半部的文本区。将考生文件夹下的图片文件ppt
Thebankwillextendourloan,shouldtheneed______.
最新回复
(
0
)