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
2015-06-07
43
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.
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/6IQ7777K
0
大学英语六级
相关试题推荐
Youmightthinkyoulefttheworldofcliques(小团体)andin-crowdsbehindwhenyoulefthighschool.You’dbewrong.Thebenefi
Youmightthinkyoulefttheworldofcliques(小团体)andin-crowdsbehindwhenyoulefthighschool.You’dbewrong.Thebenefi
A、Itwasmild.B、Itwashumid.C、Itwashot.D、Itwascool.C对话中女士提到…ourfirstsummerhere…100Ffortenstraightdays.Therewasn
A、Takecourseswithalighterworkload.B、Droponecourseanddoitnextsemester.C、Dotheassignmentstowardstheendofthes
A、Theman’sattitudeismoresensiblethanthewoman’s.B、Theyhavedifferentopinionsastowhattodonext.C、Theyhavetopay
A、Trytoretainasmanynewwordsaspossible.B、Practicewordsatappropriateintervals.C、Learndifficultwordswiththehighe
A、Hewon’tbereadyuntilnextweek.B、HeisavailableanydayexceptWednesday.C、HewillbebusybeforeWednesday.D、Hecanme
OntheeveningbeforeAllSaints’Dayin1517,MartinLuthernailed95thesestothedoorofachurchinWittenberg.Inthoseda
A、CreatingAbstractExpressionism.B、Paintingpeopleandanimals.C、Sponsoringanewartmovement.D、Exploringrealisticmethods
A、Administeranexamination.B、Presentaconferencepaper.C、Explainnextweek’sschedule.D、Takeattendanceinclass.A这是一道细节题。
随机试题
A.β受体阻断剂B.甲氨蝶呤C.利福平D.阿糖胞苷E.头孢菌素与多柔比星合用或配伍可导致坏死性结肠炎的是
男性,40岁,农民。突然畏寒发热4天伴头痛,全身肌肉痛,以腓肠肌痛为著,于8月中旬来诊。按“感冒”治疗,未见好转,3天后皮肤出现淤斑、淤点、巩膜黄染入院。体检:体温39.4℃,巩膜黄染,腹股沟淋巴结肿大,肝肋下2cm,腓肠肌有明显压痛。化验:WBC25.2
为进一步确认该化合物的致癌性,最好的方案是
《公路工程标准体系》的体系结构分为板块、模块、标准三层,其中建设板块由管理、勘测、设计和()等模块组成。
某实行监理的工程,建设单位通过招标选定了甲施工单位,施工合同中约定:施工现场的建筑垃圾由甲施工单位负责清除,其费用包干并在清除后一次性支付;甲施工单位将混凝土钻孔灌注桩分包给乙施工单位。建设单位、监理单位和甲施工单位共同考察确定商品混凝土供应商后,甲施工单
银行的流动性不足通常源于()。
Theyearis2094.IthasbeenannouncedthatacometisheadingtowardstheEarth.Mostofitwillmissourplanet,buttwopiec
(2010—非选—37)简要述评斯大林时期苏联社会主义工业化。
当“吃瓜群众”身陷网络情绪泥沼,就需要有人__________。对那些有能力调节的人来说,绝不能仅仅满足于当一个网红或者大V,而是要凭借自身的专业知识和理性精神。通过和谐有序的探讨、__________的解惑,使网民避免陷入集群极化的陷阱。填入画横线部分最
_____chocolat,jen’enaiplus.
最新回复
(
0
)