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
Light Night, Dark Stars Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with
Light Night, Dark Stars Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with
admin
2013-10-25
53
问题
Light Night, Dark Stars
Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14, 000 stars in the sky, says Dennis Ward, an astronomer with the University Corporation for Atmospheric Research(UCAR)in Boulder, Colo. But when people are surrounded by city lights, he says, they’re lucky to see 150 stars.
If you’ve ever driven toward a big city at night and seen its glow from a great distance, you’ve witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult.
Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another, " Ward says, "that city will suffer the effects of light pollution on a much greater scale. "
Hazy skies also make it far more difficult for astronomers to do their jobs.
Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can’t locate these objects, they can’t learn more about them.
Light pollution doesn’t only affect star visibility. It can harm wildlife too. It’s clear that artificial light can attract animals, making them go off course. There’s increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr. , a scientist at Clemson University in South Carolina. "When light occurs at night, " he says, "it has a very disruptive influence. " Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.
Which of the following statements is NOT related to light pollution?
选项
A、A haze of light is formed from artificial lights such as streetlights and building lights.
B、Lights from different sources stream into space and illuminate the night sky.
C、The night sky is illuminated by the lights from big glowing cities in the night.
D、Stargazing becomes difficult because there is a layer of haze in the air.
答案
D
解析
题意:以下说法哪个与光污染无关?A、B、C三项所述内容均可在第二段中找到。D项所表达的意思不符合原文,因为“a layer of baze in the air”的意思是“空气中有一层薄雾”。故本题选D。
转载请注明原文地址:https://kaotiyun.com/show/uHmd777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Youwillhearfivepeoplegivingtheiropinionsonchanginginlife.Forquestions9-13,choosefromthelistA~Fwhateach
Youwillhearfivepeopletalkingabouttheshortcoursestheyattended.Forquestions9-13,choosefromthelistA-Fwhate
Youwillhearfivepeopletalkingabouttheshortcoursestheyattended.Forquestions9-13,choosefromthelistA-Fwhate
Youwillhearfivepeopletalkingabouttheshortcoursestheyattended.Forquestions9-13,choosefromthelistA-Fwhate
随机试题
被告人严昌华(男,43岁)于1963年5月在部队服役期间,因违反军纪曾受到连队指导员赵刚的批评后,对赵不满;趁赵不备,将其“五一”式手枪1支及子弹20发偷走。同年10月,严借探亲之机将枪弹带回家中,交给母亲隐藏。1964年11月转业后,就将枪弹从母亲处取来
电渣压力焊焊接,以每一楼层或施工区段中300个同级别钢筋接头为一批,不足300个时仍为一批,每批随机切取3个拉伸试件。()
影响公司流动比率的主要因素有()。
一般资料:求助者,女性,32岁,大学教师。案例介绍:求助者与丈夫是大学同学,双方感情很好。一年前,求助者生下女儿,母亲过来照顾,一家人其乐融融。半年前,单位评定职称,求助者因为休产假,在工作量和科研成果方面与同事相比又没有优势,没有评上副教授。求助者觉得
下列不属于文学作品由“第一文本”转化为“第二文本”并由现实的读者实现文学接受的过程的一项是()。
简述计划与控制的关系。
Researchershaveshownthatnoisecanadverselyaffecthumaninbothphysiologicalandpsychologicalways.Hearinglossesinpar
根据法律规定,有权提名国务院总理人选的是()
A、Itisaplasticcard.B、Peoplecanlendittoothers.C、Itcancarry-alineofcreditrangingfromseveralhundredtoseveral
Readthearticlebelowaboutabookletpublishedbyabank.Foreachquestion31-40,writeonewordinCAPITALLETTERSonyourA
最新回复
(
0
)