首页
登录
职称英语
[originaltext] Many scientists today are convinced that life exists elsewhere
[originaltext] Many scientists today are convinced that life exists elsewhere
游客
2024-06-14
15
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. 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? 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, there are so many billions of planets that this would still leave a vast number on which life could exist.
选项
A、The planet must be as big and heavy as the earth.
B、Proper conditions are essential to the existence of life.
C、Double stars can provide steady light and heat.
D、The distance between a planet and its sun should be right.
答案
C
解析
Which of the following statements is incorrect for a planet supporting life?
四个选项都描述某颗行星的情况,由此可以猜测,本题考查内容可能是关于行星中有存在生命所需具备的某种条件。从第二段的描绘中可以找到答案。“First, eliminate those stars that are not like our sun. Next...already died out...”C)选项所说的双恒星可以提供稳定的光与热并不是有生命的星球必需的条件,因为地球只有太阳一个恒星,光和热就已经适宜。故正确答案为C)。
转载请注明原文地址:https://tihaiku.com/zcyy/3633904.html
相关试题推荐
[originaltext]GeneralizingabouteducationintheUnitedStatesinvolvesso
[originaltext]GeneralizingabouteducationintheUnitedStatesinvolvesso
[originaltext]Yourprofessorhasaskedmetotalktoyoutodayabouttheto
[originaltext]Yourprofessorhasaskedmetotalktoyoutodayabouttheto
[originaltext]Inthe18thcenturyFrencheconomistsprotestedtheexcessive
[originaltext]Inthe18thcenturyFrencheconomistsprotestedtheexcessive
[originaltext]Todaywearegoingtotalkaboutcopyrightingworksofart.A
[originaltext]Exportersaregoingtohavetochangeiftheyhopetopenetra
[originaltext]Exportersaregoingtohavetochangeiftheyhopetopenetra
[originaltext]M:Soyou’regoingtobewritingfortheschoolnewspaper?W:Yes
随机试题
Peopletakephotographsfora【C1】______ofreasonsbutthemost【C2】_____
[originaltext]W:Thisfoodisterrible!Ican’tevenfinishmydinner.M:Ikno
TheComplexitiesofReadingThislectureisthefirs
[originaltext]Mostrainforestslieclosetotheequator,wheretheclimate
为防止围岩丧失稳定产生坍塌、冒顶,当隧道遇到不良地段时,可采用()进行超前
钢筋的焊接,应优先选用()。A.电弧焊 B.压力焊 C.气压焊 D.闪光
工业企业燃气管道包括()。A、工厂引入管 B、厂区燃气管道 C、室内燃
少阴经头痛的特征是A.前额连眉棱骨痛 B.两侧太阳穴处痛 C.后头部连
把下面的六个图形分成两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
蔡某系某服装有限公司业务部经理。因在酒吧饮酒与梁某发生冲突。民警闻讯赶到后,对蔡
最新回复
(
0
)