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
2016-04-02
42
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. [20]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.
[21]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.
19. Why is there no jet traffic at Washington’s National Airport from 11 pm to 7 am?
20. What result might noise reduction cause according to the speaker?
21. 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
主旨题。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/EvL7777K
0
大学英语六级
相关试题推荐
IsitanywonderthatAmericaisalsoacountryofdangerouslyoverweightpeople?AccordingtoarecentstudybytheNationa
【C1】______inawarispainfultoanynation.Nonationswantstosenditsyoungpeopletofightanddie.Itisevenworsewhent
TheConservativegovernmentwillfacedifficultyprovingthatitsplantoautomaticallyenrolleligibleCanadiansintheOldAge
Britainmaynotalwayscheck【C1】______properly,butitissadlygoodaterectingotherbarriersinfrontofpeoplewhowanttov
IsHeadphoneGoodforWork?A)MarissaYuworksinabusyoffice,surroundedby120co-workersinamostlyopenspace.Yetwhens
A、Toidentifykindsofhoney.B、Toidentifyrelatives.C、Tofindtheirwaybacktothenest.D、Tolocateplantfibers.B由男士提到I’m
Humansarehavingahardenoughtimecopingwiththenaturalvariabilityinourenvironment,whichcausesdisasterssuchasheat
AmitaiEtzioniisnotsurprisedbythelatestheadingsaboutschemingcorporatecrooks(骗子).AsavisitingprofessorattheHarva
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicandtosociologiststhatmodernsocietyhaschangedpeop
A、Hemisseshisflight.B、Hecanfindagoodseat.C、Hecanleavetheairportfirst.D、Hisluggagecomesoutlast.C短文说,你知道谁在下飞机
随机试题
在二氧化碳气体保护焊使用焊丝的化学成分中,对飞溅影响最大的元素是________。
患者,男性,35岁。突发上腹部疼痛,伴恶心、呕吐。查尿常规:红细胞满视野,白细胞6~13个/HP,血常规正常,考虑为左输尿管结石。目前最恰当的急救处理措施是
既是食品又是药品品种的是资源严重减少的主要常用野生药材物种的是
从事生产经营的纳税人应自取得工商营业执照之日起()内向税务机关申请办理税务登记。
通常情况下,先以电子数据报关单形式向海关申报,后提交纸质报关单并随附有关单证提交海关。( )
法人所具有的参加民事法律关系,享受民事权利和承担民事义务的资格称为:
甲、乙两人互发E-mail协商洽谈合同,4月30日甲称:“我有笔记本电脑一台,配置为……九成新,8000元欲出手。”5月1日乙回电称:“东西不错,7800元可要。”甲于5月2日回复:“可以,5月7日到我这儿来。”乙于5月4日回电:“同意。”甲于当日收到。上
某大学通过选取1900年至2000年出生且在该大学医学中心就诊的患者信息,对他们的医疗记录进行分析研究,发现出生月份和疾病发生率之间有某种相关性,出生月份决定了一个人是否容易生病。在所有的月份中,7月和10月出生的人得哮喘的概率最大,3月出生的人心脏最容易
Aborroweris______.
December10th,2010DearSirs,Iknowthatyourcompanyhasareputation(声誉)forqualityproductsandfairnesstowardit
最新回复
(
0
)