首页
登录
职称英语
[originaltext]Astronomers have discovered a potentially habitable planet of sim
[originaltext]Astronomers have discovered a potentially habitable planet of sim
游客
2024-05-15
14
管理
问题
Astronomers have discovered a potentially habitable planet of similar size to Earth in orbit around a nearby star. A team of planet hunters spotted the alien world circling a red dwarf star called Gliese 581, 20 light years away. The planet is in the “Goldilocks zone” of space around a star where surface temperatures are neither too hot nor too cold for liquid water to form. If confirmed, the planet would be the most Earth-like that has ever been discovered in another solar system and the first strong contender for a habitable one. More than 400 exoplanets have been discovered by astronomers, but most are gas giants, like Jupiter, that would be inhospitable to life as we know it. Astronomers used the Keck telescope in Hawaii to study the movement of Gliese 581 in exquisite detail and from their observations inferred the presence of a number of orbiting planets. The team report two new planets in the Astrophysical Journal, bringing the total number known to be circling the star to six. One of the planets, named Gliese 581g, has a mass of three to four times that of Earth and takes 37 days to orbit the star. Astronomers believe it is a rocky planet with enough gravity to retain an atmosphere. Unlike the previously discovered planets, Gliese 581g lies squarely in the region of space where life can thrive. One side of the planet is always facing the star, much as one side of the moon constantly faces Earth. The average temperature on the planet is estimated to be between -31 to -12℃, but the ground temperature would vary from blazing hot on the bright side and freezing on the dark side.
Questions 32 to 35 are based on the passage you have just heard.
32. What can we learn about Gliese 581?
33. How many planets are circling Gliese 581 so far as we know?
34. What do astronomers think of the planet Gliese 581g?
35. In what aspect does Gliese 581g resemble the moon?
选项
A、It couldn’t give out light by itself.
B、It is the only satellite to Gliese 581.
C、One side of Oliese 58 lg constantly faces Gliese 581.
D、It is of the similar size to the moon.
答案
C
解析
[C]项内容表明,It指代Gliese 581g,再根据选项中的couldn’t give out light,similar size to the moon等可推断出,本题考查该星球的情况。短文结尾处提到,行星Gliese 581g的一面总是面对着红矮星Gliese 581,就像月亮总是有一面对着地球一样,由此可知,答案为[C]。
转载请注明原文地址:https://tihaiku.com/zcyy/3599708.html
相关试题推荐
[originaltext]Theworld’ssmartestadolescentsinmathematicsandsciencea
[originaltext]InBritainthereare11nationaldailynewspapersmidmostpe
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Weseemtobehavingthisconversationoverandoveragain.W:
[originaltext]M:Hey,Amy,whereareyouoffto?W:TotheRecreationCenter.I
[originaltext]W:I’mreallylookingforwardtothistripwithourgeologyclass
[originaltext]Yuppiesareyoungpeoplewhocamalotofmoneyandliveina
[originaltext]Yuppiesareyoungpeoplewhocamalotofmoneyandliveina
随机试题
Iftheoldmaximthatthecustomerisalwaysrightstillhasmeaning,thenth
Thepolicewereonthealert______anysuspiciouspackagesthatmightcontainche
[originaltext]AnewschoolyearhasbeguninAmerica.Butsomechildrendo
运动神经元病中最不易受累的肌肉是A.四肢骨骼肌 B.躯干肌 C.呼吸肌 D
(2017年真题)证券公司的( )应当在任职前取得经国务院证券监督管理机构核准
胃癌来源于()A.腺颈部的干细胞 B.表面黏液细胞 C.壁细胞 D.主
翻开世界文学史,透过深邃而厚重的文字,扑面而来的是婉转曲折的历史、惊心动魄的故事
Toremovejammedpaperfromtheprinter,
(2014年真题)产权所有人、承典人均不在房产所在地的,房产税的纳税人为房产代管
开标工作由()主持。A.招标人 B.招标代理人 C.评标委员会 D.政府监
最新回复
(
0
)