首页
登录
职称英语
What is the main topic of this news? [originaltext] Scientists say that night
What is the main topic of this news? [originaltext] Scientists say that night
游客
2023-11-05
38
管理
问题
What is the main topic of this news?
Scientists say that nighttime flights are much more damaging to the environment than daytime air travel. In new research published in journal Nature, they say vapor trails produced by aircrafts do far more damage during the night. The reason is condensation water vapor emitted from hot engine of aircraft condensing into trailing clouds. Our science reporter M.G. has more. "The scientists say that in daylight the trails act like mini-clouds. They are good for the environment because the white color deflects the Sun’s rays and reduce temperature. At night from the sun goes down this positive benefit is lost. The impact of night travel is surprisingly large. In the United Kingdom only a quarter of flight takes place in darkness.But this accounts for up to 80% of greenhouse effect from condensation."
选项
A、How to ensure safe navigation at night.
B、The possible reasons for greenhouse effect and the solutions.
C、How to use the Sun’s rays to help flights.
D、Negative effects of the nighttime flight on the environment.
答案
D
解析
主旨大意题。遇到这样的题,我们可以更多的关注新闻的开头和结尾。本段新闻在开始就谈到“科学家们声称夜间飞行对环境造成的危害要大于日间航行”。而结尾也举出了一个数字的例证来说明夜间航行给环境带来的危害。所以D项所归纳的意思是符合本段新闻的主旨的。
转载请注明原文地址:https://tihaiku.com/zcyy/3160911.html
相关试题推荐
WhathastheU.S.pressedSudantodo?[originaltext]ThesecondhighestU.
Whatissignificantaboutthereview?[br][originaltext]Movingawayfrom
Accordingtotheexperiments,manyblindpeople[originaltext]Didyoueverw
Whatistheconversationmainlyabout?[br][originaltext]W:Hello?M:Hi.Mari
Themanwantstohave______intheapartment.[br][originaltext]W:Hi!Welcome
Themanwantstohave______intheapartment.[br][originaltext]W:Hi!Welcome
Themanwantstohave______intheapartment.[originaltext]W:Hi!WelcometoRen
WhathappenedduringtheNewYearcelebrationinThailand?[originaltext]The
SheikhHasinainsistedthatshe______.[br][originaltext]TheformerPrim
SheikhHasinainsistedthatshe______.[originaltext]TheformerPrimeMini
随机试题
Whenyoufirstdriftoffintoslumber,youreyeswillrollaboutabit,your
ThespeechacttheorywasfirstputforwardbyA、JohnSearle.B、JohnAustin.C、No
[originaltext]M:Icanunderstandyou.Iusedtodrivehourstoworklikeyou.
某工程建设期2年,建设单位在建设期第1年末和第2年末分别从银行借入500万元和5
按照我国现行规定,政府投资项目建设程序的第一个阶段是()。A.建设准备 B.
Thechangeinthatvillagewasmiraculou
下列年份中,清洁能源机组上网电量占当年并网机组总上网电量比重最高的是()A
为解决一些高一新生进入学校后难以适应新环境、课业跟不上等问题,学校社会工作者拟采
在套利活动中,建仓时的价差是以价格较高的一“边”减去价格较低的一“边”,而在平仓
A.Rivalta试验(-)、中性粒细胞为主 B.Rivalta试验(+)、葡
最新回复
(
0
)