首页
登录
职称英语
[originaltext] Many scientists today are convinced that life exists elsewhe
[originaltext] Many scientists today are convinced that life exists elsewhe
游客
2023-09-03
56
管理
问题
Many scientists today are convinced that life exists elsewhere in the universe. Life probably much like that on our own planet. As far as astronomers can determine, the entire universe is built of the same matter. (26) They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore, it is reasonable to guess that other stars, with their own planets, were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist.
If we suppose that every star in the universe has a family of planets, then how many planets might support life? (27)First, eliminate those stars that are not like our sun. Next. eliminate most of their planets; they are either too far from or too close to their suns. Then eliminate all those planets which are not the same size and weight as the earth. Finally, remember that the proper conditions do not necessarily mean that life actually does exist on a planet. It may not have begun yet, or it may have already died out.
This process of elimination seems to leave very few planets on which earthlike life might be found. However. even if life could exist on only one planet in a million, (28) there are so many billions of planets that this would still leave a vast number on which life could exist.
选项
A、The author is optimistic.
B、The author is pessimistic.
C、The author is aggressive.
D、The author is ambitious.
答案
A
解析
文中最后一句提到" there are so many billions of planets that this would still leave a vast number on which life could exist"..还有无数的星球为生命的存在提供可能。所以作者的态度仍然是乐观的,故正确答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/2981109.html
相关试题推荐
[originaltext]ItmaybeSurprisingtolearnthattherearemanydeafpeople
[originaltext]M:I’mgoingtotalktoyounowaboutthesuffragettemovement.W
[originaltext]M:I’mgoingtotalktoyounowaboutthesuffragettemovement.W
[originaltext]M:I’mgoingtotalktoyounowaboutthesuffragettemovement.W
[originaltext]Inthepastindustrieshadmorefreedomthantheyhavenow,a
[originaltext]Inthepastindustrieshadmorefreedomthantheyhavenow,a
[originaltext][29]Moods,saytheexperts,arefeelingsthatarelikelyto
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordt
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordt
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordt
随机试题
Thegangderivedtheirnicknamefromtheirdarkclothingandblackedupfacesfo
关于公文写作,一份完整的计划应包括的内容有()A.现状分析 B.目标和任务
给定关系模式Rimage.pngU,F>,其中U={ABCDE},F={AB→D
固结试验过程中,如为饱和试样,则在施加第一级荷载后,应()。A.记录试样高度变化
A.肾上腺素 B.阿托品 C.胺碘酮 D.利多卡因 E.碳酸氢钠心肺脑复
急性非sT段抬高型心肌梗死,以下处理方式不正确的是A.低分子肝素抗凝 B.氯吡
下列风险中,属于房地产投资主要风险的包括( )。A.市场供求风险 B.利率风
患者男,下肢严重挤压伤后发生急性肾衰竭,少尿期不可能出现的是A.尿相对密度低
洋金花的内服量应控制在A.0.05~0.1g B.0.3~0.6g C.0.
混凝土采用泵送方式时应符合下列规定()。A.在泵送过程中,受料斗内应具有足
最新回复
(
0
)