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
The economic costs of noise to society are several. Airports are currently op- erating at less than capacity because of noise re
The economic costs of noise to society are several. Airports are currently op- erating at less than capacity because of noise re
admin
2010-10-28
53
问题
The economic costs of noise to society are several. Airports are currently op-
erating at less than capacity because of noise regulations, which restrict their 【S1】______.
hours of operation. For instance, at Washington’s national airport no jet traffic is
allowed from 11 p. m. to 7 a. m. Other airports restrict the use of certain run-
ways. One estimated is that noise restrictions reduce possible airport use by 20 【S2】______.
percent. The profitable cargo trade is especially affected by night restrictions.
In the case of airports, jet engines may be modifying to reduce their noise lev- 【S3】______.
el, or insulation (隔音) from air traffic noise may be provided by the purchasing 【S4】______.
of land around airports. It is estimated that $ 5.7 billion would be required to
equip all existing jet engines for noise control devices. However, 【S5】______.
consider the current state of the art, even taking this step will not reduce noise 【S6】______.
levels at all points to acceptable values. Some combination of methods is proba-
bly necessary.
If all aircraft are made quieter by existing methods, there would be a number 【S7】______.
of economic benefits. An increase in airport capacity would occur. Property val-
ues near airports might rise. Transportation costs to and from airports could be
increased since the airports now could be located closer to population centers. 【S8】______.
Much research still needs to be done on the economic aspects of noise re-
duction and noise effects. Although some of the effects of noise pollution are
known, more must be discovered about their effects on health, productivity, prop- 【S9】______.
erty 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 alert about the dangers and economic costs of noise poi- 【S10】______.
lution so that people may make intelligent choices and exert appropriate pres-
sures.
【S9】
选项
答案
their→its
解析
一致问题。此处物主代词指代的是noise pollution,因此应用its形式指代。
转载请注明原文地址:https://kaotiyun.com/show/gZz7777K
0
大学英语六级
相关试题推荐
PassageOneItcanbeshowninfactsendfiguresthatcyclingisthecheapest,mostconvenient,endmostenvironmentallydes
PassageOneItcanbeshowninfactsendfiguresthatcyclingisthecheapest,mostconvenient,endmostenvironmentallydes
PassageOneItcanbeshowninfactsendfiguresthatcyclingisthecheapest,mostconvenient,endmostenvironmentallydes
Politicalinstitutionsdevelopwhenthecomplexityofthesocietyreachesthepointatwhichkinshiporganizationcannolonger
A、Plantingcrops.B、Clearingnewland.C、Buildinghouses.D、Caringforanimals.D
A、Politicalscience.B、Economics.C、GettinganA.D、Politicalscienceandeconomics.B
A、Becausehewantstocollectinformationabouttheshoppers.B、Becausepeopleintheshoppingmallhavetimetoanswerhisques
A、Inabuilding.B、Inatreehole:C、inacave.D、Alloftheabove.D
Themostinterestingarchitecturalphenomenonofthe1970’swastheenthusiasmforrefurbishingoldbuildings.Obviously,thisw
A、Atthewestendofastreet.B、Totheeastofthetrafficlight.C、Justbehindabrown-brickbuilding.D、Onthewestsideofa
随机试题
按经脉属络关系,足厥阴经属
在自杀的社会学因素的叙述不正确的是
经批准可以减税的情形有()
某铁路客运专线铁路工程,采用CRTSⅡ型板式无砟轨道。施工过程中,由于建设单位赶工期,施工单位组织不力,造成部分无砟轨道返工,影响工期1个月,造成直接经济损失为250万元人民币,问题:根据《铁路建设工程质量事故调查处理规定》,该事故属于什么等级?假设施
利率市场化的过程中,应当遵循的原则包括( )。
期货公司申请金融期货交易结算业务资格,董事长、总经理和副总经理中,至少2人的期货或者证券从业时间在______年以上,其中至少1人的期货从业时间在______年以上且具有期货从业人员资格、连续担任期货公司董事长或者高级管理人员时间在______年以上。(
________是唐代最为流行、传唱最久的一首声乐作品,又名《渭城曲》《阳关曲》。
下表是依据《中华人民其和国行政复议法》制作的复议申请人、复议被申请人和复议机关对照表。若当事人对复议机关作出的决定不服提起行政诉讼,对于行政诉讼被告,下列说法正确的是()。
在结构化设计方法中,模块结构的基本符号●→表示
以下程序的输出结果是【】。#defineMCNA(m)2*m#defineMCNB(n,m)2*MCRA(n)+m#definef(x)(x*x)main(){int
最新回复
(
0
)