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 controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually lo
admin
2010-01-07
48
问题
The controversial Anglo-French supersonic transport plane, the Concorde, had attracted much attention because it is unusually loud. A late-model jumbo 747, for example, creates 100 or more decibels of sound over an eight-square-kilometer area. The Concorde spreads a 100-decibel-plus blanket of noise over some 140 square kilometers. On takeoff, the Concorde sounds like four F-4 fighter jets taking off at once. Its penetrating, low-frequency rumble makes the Concorde "completely distinctive" from other jets.
What bothers noise experts is that plenty of commonplace machines are just as loud as, or even louder than, the Concorde. A sanitation truck can be noisier, and so can a heavy diesel truck pulling away from a stop sign. One expert who has gone out of his way to dramatize the prevalent offensiveness of the city sound-scale is Dr. Thomas H. Fay, director of speech and hearing at Columbia-Presbyterian Medical Center in New York. Dr. Fay took a sound-meter into a New York City subway and proved that an approaching train can be twice as loud as the Concorde.
Since World War Ⅱ, the number of the high-powered noise-makers, from trucks and motorcycles to air conditioners and sirens has increased almost geometrically. It’ s no wonder that in many areas of the country, especially in the suburbs, the average sound level has doubled in 20 years. Noise experts estimate that city noises are increasing a half-decibel a year. They found that in 1971 the quietest parts of Los Angeles--thought to be a relatively quiet city--were louder than the loudest districts of New York in 1937.
The word "geometrically" in the first sentence of the last paragraph means ______ .
选项
A、very rapidly
B、very slowly
C、strangely
D、doubly
答案
A
解析
本题为语义判断题,geometrically的意思是“按几何倍速度增长地”。
转载请注明原文地址:https://kaotiyun.com/show/PrPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Fromhervantagepointshewatchedthemaindoorsswingopenandthefirstarrivalspourin.Thosewhohadbeenattheheadoft
Whatnaturalresourcesdidthesouthernparthave?
"Down-to-earth"meanssomeoneorsomethingthatishonest,realisticandeasytodealwith.Itisapleasureto(31)______some
Humanrelationshavecommandedpeople’sattentionfromearlytimes.Thewaysofpeoplehavebeenrecordedininnumerablemyths,
Malelionsareratherreticentaboutexpendingtheirenergyinhunting—morethanthree-quartersofkillsaremadebylionesses.
IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount
Whichgame...issoldwell?【P1】______allowsgamerstoselectgameswithequal-caliberopponents?【P2】______isprobablyfright
Whichgame...issoldwell?【P1】______allowsgamerstoselectgameswithequal-caliberopponents?【P2】______isprobablyfright
【B1】ThefreeenterprisesystemhasproducedatechnologycapableofprovidingtheAmericanconsumerwiththelargestandmostva
Inthe18thcentury,NewYorkwassmallerthanPhiladelphiaandBoston.TodayitisthelargestcityinAmerica.Howtoexplain
随机试题
搏动性头痛常见于
女,37岁。痛经6年,体检发现盆腔包块。月经周期缩短,经期延长,经量多。G3P2,放置节育器。妇科检查外阴阴道正常,宫颈光滑,子宫后位,孕9周大。活动不好。右附件区可及囊实性包块,与子宫后方粘连。B超见子宫稍大,肌壁有多个低回声结节,右附件非纯囊肿。
外耳道炎病因不包括
患者,男,22岁。发热恶寒,寒重热轻,头痛身痛,鼻塞流涕,咳嗽,咳痰清稀,舌苔薄白,脉浮紧。治疗应首选
王某将从拍卖机构获得的打包债权予以处置,处置了其中A企业的债权,收款8万元(该债权原为向甲企业以10万元购置,该批债权价值15万元,其中A企业欠甲的是9万元,B欠甲的是6万元,购置时发生拍卖招标手续费0.2万元),处置过程中发生审计评估费、诉讼费等合计0
阅读材料,完成下列问题。《湖心亭看雷》原文:湖心亭看雪
我国奴隶社会学校教育的内容以礼乐为中心,具体包括礼、乐、射、御、书、数。()(2016.湖南)
下列选项中,属于民事法律事实的是()。
(2017年复旦大学)根据杜邦分析框架,A公司去年净资产收益率(ROE)下降,可能是由于()引起的。
【B1】【B5】
最新回复
(
0
)