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
2019-04-22
74
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/76X7777K
0
大学英语六级
相关试题推荐
BoththeSenateandHousehealthcarebillsproposeincentivestoboostcorporatewellnessprogramsthataimtohelpemployeess
A、Workers’longworkinghours.B、Workers’poorworkingconditions.C、Thelowrateofinflation.D、Thehighlevelofunemployment
A、Becausethisbrandhasgoodquality.B、Becausetheyareconsumers’favorite.C、Becausetheydon’tsellhighpriceshoes.D、Bec
A、Choosingcourses.B、Preorderingtextbooks.C、Dealingwithusedbooks.D、Lookingforpart-timejobs.B对话一开始,女士便询问课本预定程序。接着对话一直围
A、Trafficaccidents.B、Radiation.C、Traintravel.D、Aircrash.B原文提及“不久前人们认为在太空中会遭遇到严重的威胁,主要有辐射和流星撞击”,故B正确。
A、Mechanicalfailure.B、Heavytraffic.C、Extremeweather.D、Humanerror.D录音提到,专家指出在每年120万的道路死亡人数中,90%都是由人的过错造成的。因此本题选D项。
Oneofthemostcommonimagesofanadvanced,Western-stylecultureisthatofabusy,traffic-filledcity.Sincetheirfirst【B1
A、Around40%.B、Slightlyover50%.C、About15%.D、Approximately70%.B对话中女士明确提到她认为男性黑人运动员的毕业率仅超过一半,而男士随即认同了这个说法。B项中的Slightly对应录音
A、It’sbeingoutdoors.B、Sheneedstodealwithdifferentpeople.C、It’ssometimesdangeroustodriveatnight.D、Shehastowor
Signs:theMostUsefulThingWePayNoAttentionto[A]Signage—thekindweseeoncitystreets,inairports,onhighways,inho
随机试题
我国在设置行政组织时,机构和人员要尽量精简,层级与幅度要合理适中,这体现了行政组织的
有关汤剂用法叙述错误的是
ABO血型不合的新生儿溶血病,需要换血时最合适的血液是
A.痢疾志贺菌B.福氏志贺菌C.宋内志贺菌D.鲍氏志贺菌E.史密志贺菌目前我国主要流行的菌群是()
关于阿片类药物救治措施描述错误的是()。
甲股份有限公司2013年的有关资料如下:(1)甲公司2013年度销售收入净额为1000万元,销售净利率为10%,期初应收账款账面余额为200万元,期末应收账款账面余额为160万元;(2)甲公司2013年年初负债总额为800万元,权益乘数为5,期末负债总
甲公司、乙公司、丙公司都是从事奶粉生产的厂家,其主要市场均在某市,3家公司在某日的行业会议中签订了关于维持现有价格的协议,不允许相互之间采用降低价格的方式进行竞争。根据《反垄断法》的规定,关于该协议的说法正确的是()。
在出现新闻媒体对会议的负面报道时,企业要有勇气面对,正确的做法是()。
A、Theweatheriswarmonthecoast.B、Theweatheraffectstheoperationgreatly.C、It’sextremeweatherconditionsthatmakeexp
A、Healthcarecrisiscan’tbesolvedinashorttime.B、Morepeoplearedyingfrompreventablediseases.C、Healthcarecrisisis
最新回复
(
0
)