首页
登录
职称英语
[originaltext] Science fiction writers have often imagined human beings going
[originaltext] Science fiction writers have often imagined human beings going
游客
2023-09-14
36
管理
问题
Science fiction writers have often imagined human beings going to live on Mars. But these days, scientists are taking the idea seriously. It has a great deal to recommend it, since it might solve the problem of overcrowding on the earth. But obviously, it would not be worth making the effort unless people could live there naturally. If the atmosphere were like that of the earth, this might be possible. But in fact it is mostly carbon dioxide. Apart from that, there are other problems to be overcome. For example, the temperature Would have to be raised from 60 degrees below zero to 15 degrees above it. Scientists who study Mars have laid down the program that they can follow. To begin with, they will have to find out whether life has ever existed on the planet of Mars in the past. Secondly, they will have to make a reliable map of its surface. And finally, they will have to make a list of the gases. Above all, they will have to discover how much nitrogen it possesses, since nitrogen is four fifths of the air we breathe. They are surprisingly optimistic about raising the temperature on Mars and believe it could be done in two hundred years. It Will take a bit longer, though, to transform the atmosphere so that human beings, could live there. Scientists estimate that this will take one hundred thousand years.
选项
A、Man will probably be able to live there in 200 years.
B、Scientists are rather pessimistic about it.
C、Man will probably be able to live there in 100,000 years’ time.
D、Scientists are optimistic about overcoming the difficulties soon.
答案
C
解析
What is the prospect of people living on Mars?
本题考查人类移居火星的前景(prospect)。根据短文末句Scientists estimate that this will take one hundred thousand years可知,人类可能100,000年之后才能移居火星,因此C为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3014668.html
相关试题推荐
[originaltext]W:I’mlosingmysleep.Ifeeltiredandsleepyallthetime.
[originaltext]M:Hello,mayIspeaktoMr.Hebert?W:Sorry,heisina
[originaltext]W:I’dliketotalktoMr.Smith.M:He’snotherebutMr
[originaltext]W:IsMaryreadytogototheairport?M:Ready?Shehasn
[originaltext]M:ThisisyourannualperformanceevaluationW:Sohowd
[originaltext]M:ThisisyourannualperformanceevaluationW:Sohowd
[originaltext]W:Goodmorning,sir.CanIhelpyou?M:I’mlookingfor
[originaltext]W:Excuseme,Ihavealreadybookedadoubleroomwithasea
[originaltext]M:Areyoustillworkinginthatprivatecompany?W:No.
[originaltext]M:DoyouthinkLaurawillaccepttheproposal?W:Nowa
随机试题
[originaltext]W:Hello,Brindall’sEstateAgentshere.HowmayIhelpyou?M:O
ItisnotoftenrealizedthatwomenheldahighplaceinsouthernEuropeans
Sometimeago,aninterestingdiscoverywasmadeby【C1】______ontheAegeani
期货公司应当按照规定( )风险准备金,不得挪作他用。A.提取 B.管理
下列有关基金管理公司治理中的原则中,有误的一项是( )。A.股东及其实际控制人
下述有关β受体阻滞药的适应证中错误的是A.慢性心功能不全 B.支气管哮喘 C
磺酰脲类与下列哪些药物合用时可引起低血糖反应A.糖皮质激素 B.氢氯噻嗪 C
补齐技能短板,提高就业能力 【背景链接】 为困难企业转岗职工提供有针
某女,60岁。患高血压病7年近1周头痛如锥刺,痛处固定不移,反复发作,头晕目眩,
隧道围岩分级的综合评判方法根据( )来确定隧道围岩分级。A.岩石坚硬程度 B.
最新回复
(
0
)