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
A、The effects of noise on the quality of life. B、The role of air traffic restrictions. C、The production of quieter engines. D、Th
A、The effects of noise on the quality of life. B、The role of air traffic restrictions. C、The production of quieter engines. D、Th
admin
2016-11-26
60
问题
The economic costs of noise to society are several. Airports are currently operating at less capacity because of noise regulations which restrict their hours of operation. For instance, at Washington’s National Airport jet traffic is not allowed from 11 pm to 7 am. Other airports restrict the use of certain runways. One estimate is that noise restrictions reduce possible airport use by 20 percent. The profitable cargo trade is especially affected by night restrictions.
In the case of airports, jet engines may be modified to reduce their noise level. One estimate is that $5.7 billion would be required to equip all existing jet engines with noise control devices. However, even taking this step will not reduce noise levels at all points to acceptable values. Some combination of methods is probably necessary.
If all aircraft were made quieter by existing methods, there would be a number of economic benefits. An increase in airport capacity would occur. Property values near airports might rise. Transportation costs to and from airports could be reduced since the airports now could be located closer to population centers.
Much research still needs to be done on the economic aspects of noise reduction and noise effects. Although some of the effects of noise pollution are known, more must be discovered about its effects on health, productivity, property values and the quality of life. Furthermore, the cost of noise pollution to the economy as a whole needs to be investigated. The public must be alerted to the dangers and economic costs of noise pollution so that people may make intelligent choices and exert appropriate pressures.
9. Why is there no jet traffic at Washington’s National Airport from 11 pm to 7 am?
10. What result might noise reduction cause according to the speaker?
11. What is the passage mainly about?
选项
A、The effects of noise on the quality of life.
B、The role of air traffic restrictions.
C、The production of quieter engines.
D、The economic aspects of noise reduction.
答案
D
解析
本文并无主题句,需要通过上下文综合理解。短文首先提出了噪音所带来的economic costs这个问题,然后又讨论了noise reduction所带来的economic benefits。通过对文章的整体把握,可以推断出D为正确答案。A、B、C在文中都有提及,均为细节内容而非文章主题。
转载请注明原文地址:https://kaotiyun.com/show/6mF7777K
0
大学英语六级
相关试题推荐
A、Turnupthevolume.B、Stoptalkingsomuch.C、Playthemusicmoresoftly.D、Playdifferentmusic.C此题说该男士认为音乐声实在太大了,所以要和该女士说一说
A、Climbingandleaping.B、Keepingbalance.C、Graspingfood.D、Usingthemasweapons.B此题考的是第三段的内容,短文中有原句Mosttypesofmonkeysha
A、Psychology.B、Worldhistory.C、Modernlanguages.D、Geography.A培训包括急救、乘客心理学、航班程序以及就餐服务等,只有选项A属于这些内容当中的一个。即使没有记住所有提到的培训内容,也可以通过
A、Happy.B、Worried.C、Exhausted.D、Depressed.A注意短文中提到“Boris回去后工作忙碌,他很开心想不起累了”,glad和happy是同义词,从而与选项(A)一致。
A、Interesting.B、Exciting.C、Exhausting.D、Boring.D注意短文中第二段指出在假期中Boris很快就觉得无聊了,这与选项(D)一致。
A、Hefailedhislasttest.B、Hecan’tfindhiswatch.C、He’stakingexaminationssoon.D、Hemissedhismedicalcheckup.C这是一道细节题
A、Themanhasn’tgoneoutfortwoweeks.B、ThevitaminCthatthemantookwasn’teffective.C、Themandidn’ttrytogetridof
RisingInequalityIsHoldingBacktheU.S.Economy[A]Inannouncinghisrunforthepresidencylastmonth,JebBushhassetan
A、Itscenterholdsmostofthepeople.B、Mostpartsofitextendtowardstheoutside.C、Itssuburbsarebecomingquieterandqui
Aroundtheworldmoreandmorepeoplearetakingpartindangeroussportsandactivities.Ofcourse,therehavealwaysbeenpeop
随机试题
在故障状态下,使任一非故障部位的火灾探测器发出火灾报警信号,检查区域型火灾报警控制器是否在()s内发出火灾报警信号。
杠杆式指示表的测杆轴线与被测工件表面的夹角α越小,测量误差就越大。()
毛泽东正式提出探索适合中国国情的社会主义建设道路的著作是()
A.反转录酶B.蛋白酶C.两者均是D.两者均不是HIVpol基因编码
鉴别腹股沟斜疝或直疝最有意义的体征是
以下哪些是对法律的实施进行评价的标准()
Thetechnologyindustryisatwaroverintellectualproperty.OnMay7ththefirst【C1】______ofathree-partfightbetweenOracle
现代密码学的一个基本原则是一切秘密寓于()之中。
主动攻击包括假冒、重放、拒绝服务和______。
有下面程序代码:OptionBase1PrivateSubCommand1_Click()Dima(10)AsInteger,x,bx=InputBox("请输入一个多位整数")Fork=l
最新回复
(
0
)