首页
登录
职称英语
[originaltext] There have been claims that warming on Mars and Pluto are pro
[originaltext] There have been claims that warming on Mars and Pluto are pro
游客
2024-04-24
59
管理
问题
There have been claims that warming on Mars and Pluto are proof that the recent warming on Earth is caused by an increase in a solar activity, and not by greenhouse gases. But we can say with certainty that, even if Mars, Pluto or any other planets have warmed in recent years, it is not due to changes in solar activity.
The Sun’ s energy output has not increased since direct measurements began in 1978(see Climate myth special: Global warming is down to the Sun, not humans). If increased solar output really was responsible, we should be seeing warming on all the planets and their rooms, not just Mars and Pluto.
Our solar system has eight planets, three dwarf planets and quite a few moons with at least a rudimentary atmosphere, and thus a climate of sorts. Their climates will be affected by local factors such as orbital variations, changes in reflectance(albedo)and even volcanic eruptions, so it would not be surprising if several planets and moons turn out to be warming at any one time.
However, given that a year on Mars is nearly two Earth years long, and that a year in Pluto lasts for 248 Earth years. It is rather early to start drawing conclusions about long-term climate trends on the outer bodies of the Solar System.
Images of Mars suggest that between 1999 and 2005, some of the frozen carbon dioxide that covers the south polar region turned into gas(sublimated). This may be the result of the whole planet warming(see Mars images hint at recent climate swings).
Questions 16 to 18 are based on the passage you have just heard.
16. What is the most possible reason for the warming of Mars and Pluto?
17. Which of the following statements about Pluto is correct?
18. What is the author’s attitude towards the climatic changes of Mars and Pluto?
选项
A、Solar activity.
B、Greenhouse effects.
C、Warming on all the planets and their moons.
D、No definite answer.
答案
D
解析
推理题。对于前三个选项,文章中没有肯定它们是原因,而且都有证据推翻它们,所以没有确定的因素。因此,正确答案是D。
转载请注明原文地址:https://tihaiku.com/zcyy/3568705.html
相关试题推荐
[originaltext]Californiaisalandofvarietyandcontrast.Almosteveryty
[originaltext]Californiaisalandofvarietyandcontrast.Almosteveryty
[originaltext]VietnameseauthoritiesreportedonMondaythatbirdfluhass
[originaltext]TherehavebeenclaimsthatwarmingonMarsandPlutoarepro
[originaltext]M:Hello,madam.Igotyournote.Icometosaygoodbye.W:Have
[originaltext]M:Hello,madam.Igotyournote.Icometosaygoodbye.W:Have
[originaltext]W:DoyouknowBobwell?M:Weallknoweachotherwellhere.Are
[originaltext]W:DoyouknowBobwell?M:Weallknoweachotherwellhere.Are
[originaltext]M:We’dliketworooms,asmallroomandalargeroomfacingthe
[originaltext]M:We’dliketworooms,asmallroomandalargeroomfacingthe
随机试题
Captain,MyCaptainiswrittenfor______.A、LincolnB、WhitmanC、WashingtonD、Hemm
Radiowasthepilot’sonlymeansof(communicate)______.communication句意:无线电是飞行员惟
下列选项中,属于19世纪欧洲雕塑家的是()。A.米开朗基罗 B.基布尔提
使用人员在携带仪器前往现场途中,要防止仪器过分(),及时做好相应防范措施。(
注:排名前20名的高校,科研院校有:北京工业大学、电子科技大学、哈尔
下列属于风险型决策方法的有()。A:价值分析法 B:期望值决策法 C:贝叶斯
《鉴定书》由( )签名。A.侦查人员 B.刑事技术部门的领导 C.鉴定
下列有关收入确认,正确的有()。A.转让股权收入,应于转让协议生效且完成股
中国人民银行发行票据的目的在于()。A.筹集资金 B.获取收益 C.调
下列中央银行的货币政策操作中,能够增加流通中货币量的有()。A.降低法定存
最新回复
(
0
)