首页
登录
职称英语
Of all the problems facing modern astronomers, perhaps the most fascinating
Of all the problems facing modern astronomers, perhaps the most fascinating
游客
2023-07-17
77
管理
问题
Of all the problems facing modern astronomers, perhaps the most fascinating is: "can intelligent life exist【S1】______?" Since the earth is an unimportant planet moving round an unimportant star, it would be a pride on our part to suppose that we are the only intelligent beings in the universe. But to obtain proof is difficult.
The main trouble is that our neighbor worlds, the bodies in the Solar System appear to be unsuitable for advanced life-forms. The Moon may be【S2】______out at once; it has hardly any atmosphere. Venus is little better; the surface temperature is extremely high and the【S3】______is mostly carbon dioxide. Mars with a very thin atmosphere and a severe【S4】______of water may well support simple plant life but there seems no hope of finding animals, while the attractive Martians of the story-tellers have long since been given up.
Of course this has not stopped the flow of bright ideas for【S5】______with the supposed people on Mars. In the early nineteenth century the great mathematician Gauss suggested planting tree-patterns in Siberia, so that the Martians would see them and reply【S6】______Following up this idea, the Austrian scientist Karl Littrow proposed digging very wide ditches in the Sahara, triangular in pattern, and then filling them with petrol or some such substance so that, 【S7】______lit, the ditches would present Martian observers with a "flaming triangle"【S8】______would show the existence here of intelligent minds. Even better were the plans of Charles Cros, a French writer of the eighteen-seventies, who wanted to build a large mirror to reflect the sun’s rays and concentrate them on the surface of Mars, 【S9】______ making a vast burning-glass. By swinging the mirror around, Cros explained, it would be practicable to write words in the Martian deserts simply by burning the sand. For many years he bombarded the French government with literature about this plan and was very【S10】______when no official interest was shown.
A. ruled B. communicating C. sufficiency D. elsewhere
E. which F. disappointed G. carried H. suitably
I. atmosphere J. although K. thereby L. excitedly
M. shortage N. surface O. when [br] 【S3】
选项
答案
I
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2846003.html
相关试题推荐
Doctorsshouldkeepquietandletpatientsexplaintheirproblems______(而不是去打断他们
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
[originaltext]W:Idecidetospeaktomyboss’smotheraboutmyproblemsatwor
Theincreaseinstudentnumbers______manyproblemsfortheuniversities.A、force
Theseproblemshave______astheresultofthelackofmutualcommunication.A、ar
Moresurprising,perhaps,thanthecurrentdifficultiesoftraditionalmarri
随机试题
Whichoneofthefollowingwordsisthehyponymoftheword"furniture"?A、Wardro
She______toherteacherforcomingtoschoollate.A、excusedB、apologizedC、par
KazukoNakane’shistoryoftheearlyJapaneseimmigrantstocentralCalifor
Americannolongerexpectpublicfigures,whetherinspeechorinwriting,to
【分析】直接写出空间曲线的参数方程,用基本方法计算 【评注】此题可利用斯托克斯公示转化为面积分来计算.
在完成审计实质性测试后应当对审计工作底稿进行全面复核,并在此基础上撰写审计总结的
根据以下材料,回答 Peopledonotanalyzeeveryp
美国中长期国债期货报价由三部分组成,第一部分价格变动的“1点”代表()美元。A
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
成本加酬金合同有许多形式,一般在工程初期很难描述工作范围和性质的需要采用(
最新回复
(
0
)