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
2024-02-18
18
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] 【S2】
选项
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3462266.html
相关试题推荐
Modernmedicaladvances______theaveragelifeexpectancybyseveralyears.A、ex
Theirliveswerenow______byearthshakingchange,bythearrivalofthemodern
Concrete,whichisusedinawiderangeinmodernsociety,______ofcement,san
Themodernscientificmethodisusually______toGalileowhoinventedasetof
A、Youwillnotgetthejob.B、Itperhapshasnoinfluenceonyourgettingthejo
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
GrowingupasanAsianinBritainismuchmorethanaquestionoffacingdis
[originaltext]W:Idecidetospeaktomyboss’smotheraboutmyproblemsatwor
Althoughhestillhassomeproblemstoface,______hisworkhasbeensuccessful
随机试题
[originaltext]Asayoungman,HowardWhiteofPortland,Oregon,playedbask
[originaltext]London(dpa)-TheQueenhasimposedapalacebanontheuseof
TheTruthabouttheEnvironmentA)Formanyenvironmentalists
Amongthosetanningcustomers,itisestimatedthatmostofthemare______.[br
关于化学品灼伤应急处置措施,说法错误的是()A.立即移离现场,迅速脱去被化学污
理财师需在理财规划书上具体地披露进行全生涯模拟仿真的各种假设条件、理由,这些假设
在教学中如何处理知识技能目标,能力目标以及情感态度与价值观目标的关系?
患者李某,女性,32岁,会阴侧切伤口红肿,给予红外线灯照射。照射时灯距应为 A
张衡是我国东汉时期伟大的天文学家、数学家、发明家、地理学家、文学家,下图是张衡发
1月16曰,CBOT大豆3月合约期货收盘价为800美分/蒲式耳。当天到岸升贴水1
最新回复
(
0
)