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
19
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
Thepressure______causesmanyemployeestobeoveractive,butitalsoearnst
()越位()拖延战术[br]()远射()决赛
下列关于“假个贷”的表述,错误的是()。A.“假个贷”的成因包括开发商为获得优
小茴香尤善于治疗的病证是A.寒疝腹痛 B.寒凝冷痛 C.风湿痹痛 D
消防器材的配置应结合物业的火灾危险性,针对易燃易爆物品的特点进行合理的配置。一般
在教育科学研究中,定量分析的主要手段是( )A.逻辑分析 B.统计分析 C
根据中国入世承诺,以下关于针对中国特殊保障措施,说法正确的有:A.一般保障措施不
用体重计算年长儿童的剂量时,一般应选择A.剂量的下限 B.剂量的上限 C.剂
某11OkV系统,断路器的全分闸时间为0.06s,主保护动作时间为0.09s,后
7个月患儿,发热3天,体温39~40℃,流涕,轻咳。查体:一般情况好,除咽部充血
最新回复
(
0
)