首页
登录
职称英语
[originaltext] The economic costs of noise to society are several. Airports
[originaltext] The economic costs of noise to society are several. Airports
游客
2023-08-14
17
管理
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、It is extremely dangerous to fly in the dark.
B、Noise regulations restrict the hours of airport operation.
C、Some of its runways are not in good condition.
D、Cargo planes produce more disturbing noises at night.
答案
B
解析
短文开头提到,由于噪音控制条例限制飞机运作时间,现今机场在以较低的容纳量运作,比如,华盛顿国家机场就规定从晚上11点到次日凌晨7点禁止飞机起降。由此可知,B为正确答案。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2925030.html
相关试题推荐
[originaltext](23)Inthefewminutesthatremainoftoday’sclass,(24)I’d
[originaltext](23)Inthefewminutesthatremainoftoday’sclass,(24)I’d
[originaltext]Tous,theenvironmentinwhichfishdwelloftenseemscold,
[originaltext]Today’slecturewe’llcenterontheprehistoricpeopleofNev
[originaltext]Today’slecturewe’llcenterontheprehistoricpeopleofNev
[originaltext]Today’slecturewe’llcenterontheprehistoricpeopleofNev
[originaltext]Thestatisticsareprettyscary:(12)Eachyear2.8millionco
[originaltext]Thestatisticsareprettyscary:(12)Eachyear2.8millionco
[originaltext]Thestatisticsareprettyscary:(12)Eachyear2.8millionco
[originaltext]JohnSmithson,oneoftheexecutiveproducers,talkingabout
随机试题
"Igetbywithalittlehelpfromfriends"isapopularsayingwithage-old
下列有关材料费的表述中,正确的是( )。A.材料费=工材料消耗量x材料预算单
要判断一种观点的是非对错,下列说法中正确的是()A.以伟人之是非为是非 B.以
腧穴可分为( )。A.十二经穴、天应穴、阿是穴 B.十二经穴、奇穴、阿是穴
上消化道出血患者出现乏力、心慌,出血量为A.>5ml B.50~100ml
猪苓汤的功用是A、利水渗湿,清热养阴 B、温阳健脾,利水渗湿 C、益气祛风,
法所具有的规定人们的行为模式,指导人们行为的性质特征是指(、A.法的普遍性
基金管理人应当在基金份额发售的()日前公布招募说明书、基金合同及其他有关文
近来的一项研究表明:那些在舒适工作环境里工作的人比在不舒适工作环境里工作的人生产
下列烟气脱硫方法中,不产生废水的方法是( )。A.氨法 B.海水法 C.烟
最新回复
(
0
)