必 修 3
Units 3~Unit 4
Astronomy: the science of the stars
Odds(机率) of Life on Nearby Planet“100percent” Astronomer says
An Earthsize planet has been spotted orbiting a nearby star at a distance that would makes it not too hot and not too cold—comfortable enough for life to exist, researchers announced September 29.
If confirmed, the exoplanet, named Gliese 581g, would be the first Earthlike world found residing in a star's habitable zone—a region where a planet's temperature could sustain liquid water on its surface. And the planet's discoverers are optimistic about the prospects for finding life there.
“Personally, I would say, my own personal feeling is that the chances of life on this planet are 100 percent,” said Steven Vogt, a professor of astronomy and astrophysics at the University of California. “I have almost no doubt about it.”
1.[教材原句]...which were to make the earth's atmosphere.(U4P26)
[真题呈现](2008·湖北)The top leaders of the two countries are holding talks in a friendly________.
A.atmosphere B.state
C.situation
D.phenomenon
[考题巧解]
解析:考查名词词义辨析。atmosphere“气氛,氛围”;state“状态”;situation“形势”;phenomenon“现象”。句意:两国高层领导人在友好的氛围(atmosphere)中进行谈判。
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