首页
登录
职称英语
[originaltext] Astronomers have discovered a potentially habitable planet of
[originaltext] Astronomers have discovered a potentially habitable planet of
游客
2023-08-26
60
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 58lg, 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 58lg 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 22 to 25 are based on the passage you have just heard.
22. What can we learn about Gliese 581?
23. How many planets are circling Gliese 581 so far as we know?
24. What do astronomers think of the planet Gliese 581g?
25. 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 Gliese 58lg 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和similar size to the moon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/2958652.html
相关试题推荐
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Notlongagoitwasassumedthatthedangersmanwouldmeeti
[originaltext]Notlongagoitwasassumedthatthedangersmanwouldmeeti
[originaltext]W:Goodafternoon.CanIhelpyou?M:Yesplease.I’mlookingfor
[originaltext]W:MaybeweshouldtakeFrontStreetthismorning.Theradioanno
[originaltext]W:MaybeweshouldtakeFrontStreetthismorning.Theradioanno
[originaltext]W:MaybeweshouldtakeFrontStreetthismorning.Theradioanno
[originaltext]W:MaybeweshouldtakeFrontStreetthismorning.Theradioanno
随机试题
•Readthearticlebelowaboutaplanttour.•Inmostofthelines41-52thereis
WhichofthefollowingaboutGenachowski’sspeechisCORRECT?A、Hededicatestoe
ItispossibleforstudentstoobtainadvanceddegreesinEnglishwhileknow
遇有雨、雪、大雾及()以上大风等恶劣天气时,应当停止拆除施工。A.5级(含5级
钢丝绳因异常的热影响作用在外表出现可识别的颜色变化时,应立即报废。
在我国目前单位从业人员统计中,不包括( )。A.民办教师 B.借用的外单位人
下列科学家中,其研究领域与美国“曼哈顿工程”所涉领域相同的是( )。A.华罗庚
关于基本GARCH模型说法不正确的是()。A.ARCH模型假定波动率不随时
没有预定目的,不需要付出意志努力的注意称为A.无意注意 B.有意注意 C.随
诊断张力性气胸最充分的根据是A.呼吸困难并伴有皮下气肿 B.伤侧胸部叩诊呈高调
最新回复
(
0
)