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
2023-11-02
59
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/3150677.html
相关试题推荐
WhydoesthewomantakeTheoreticalDynamicsagain?[br][originaltext]W:Excus
WhydoesthewomantakeTheoreticalDynamicsagain?[br][originaltext]W:Excus
WhydoesthewomantakeTheoreticalDynamicsagain?[originaltext]W:Excuseme,
Whatarethespeakersmainlydiscussing?[br][originaltext]W:Dan,youknowth
Theconversationmostprobablytakesplace[br][originaltext]M:Flightreserva
Whattopicarethemanandwomandiscussing?[br][originaltext]M:Ireallyapp
Whattopicarethemanandwomandiscussing?[originaltext]M:Ireallyappreciat
Whatisthemaintopicoftheconversation?[br][originaltext]W:Today’sarts
Whatisthemaintopicoftheconversation?[br][originaltext]W:Today’sarts
Whatisthemaintopicoftheconversation?[originaltext]W:Today’sartsreport
随机试题
InSeptember,inBritain,youmayseealotofbirds【C1】______onroofsandt
Thewriterwenttothebeacheverydaylastsummerbecause______.[br]Thewrit
血管母细胞瘤主要组成细胞有:()A.星形细胞 B.内皮细胞 C.外皮细胞
下列关于固定式启闭机的说法不正确的是( )。A.螺杆式适用于灌区工程的低水头闸
下列各项中,符合股份有限公司股票上市条件的是( )。A、公司股本总额不少于人民币
下列不属于商业银行流动性应急机制中预警信号的是()A.资产规模急剧扩张
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
工作说明书和()关联最为密切。A.KPI B.PRI C.PCI D.W
某支行柜员在经办借记卡取现10万元时业务操作反方向,造成短款20万元,经与客户沟
关于爱情的描述,错误的是()。A.具有浪漫色彩 B.幼儿也有爱情 C.是一种
最新回复
(
0
)