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
55
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] 【S5】
选项
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2846005.html
相关试题推荐
______(假设我所做的对比是有根据的).theproblemswillbecomemoreserious.Supposing/Suppose(t
[originaltext]M:I’veheardthemodernartexhibitionintheuniversitymuseum
[originaltext]M:I’veheardthemodernartexhibitionintheuniversitymuseum
[originaltext]M:I’veheardthemodernartexhibitionintheuniversitymuseum
[originaltext]M:I’veheardthemodernartexhibitionintheuniversitymuseum
Thegreatesttaskfacingagriculturalscientistsinthisregionisthe______of
Alotofpeoplenowadayshavemuscularproblemsintheneck,theshouldersandt
Modernscientistsdividetheprocessofdyingintotwostages-clinicalorte
Modernscientistsdividetheprocessofdyingintotwostages-clinicalorte
Robot.Itisawordthatseemsverymodern.Awordthatcreatesastrongmen
随机试题
我国导游证采用电子证件形式,由国务院旅游主管部门制定格式标准,由各级旅游主管部门
下列选项不属于影响发病的主要因素是()A.气候 B.体质 C.地域
甲状腺自身抗体的检测在临床上的应用正确的是A:是确诊是否有甲状腺疾病的指标B:
下列不属于栓剂硬化剂的是A.白蜡 B.硬脂酸铝 C.硬脂酸 D.鲸蜡醇
聂海胜;张晓光;王亚平 正确选项为():A.杨利伟;费俊龙;聂海胜 B.翟
举例说明语言的各级结构。
某商业银行大厅中有专人负责向前来储蓄的客户介绍不同种储蓄产品的区别,这属于理财顾
(2018年真题)下列税种中,最不容易转嫁的是()。A.关税 B.房产税
根据企业所得税法律制度的规定,下列各项中,属于转让财产收入的有()。A.销售包
(2019年真题)关于建设工程刑事责任的说法,正确的是( )。 A.刑事责任
最新回复
(
0
)