首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Of all the problems facing modern astronomers, perhaps the most fascinating is: "can intelligent life exist【S1】______?" Since th
Of all the problems facing modern astronomers, perhaps the most fascinating is: "can intelligent life exist【S1】______?" Since th
admin
2012-11-22
31
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
【S4】
选项
答案
M
解析
转载请注明原文地址:https://kaotiyun.com/show/HLw7777K
0
大学英语四级
相关试题推荐
Whatdeterminesthekindofpersonyouare?Whatfactorsmakeyoumoreorlessbold,intelligent,orabletoreadamap?Allof
Beforemovingtoanothercity,Mr.London______ofthehouseandthefurniture.
Concrete,whichisusedinawiderangeinmodernsociety,______ofcement,sandandgravelmixedwithwater.
Howusefularetheviewsofpublicschoolstudentsabouttheirteachers?Quiteuseful,accordingtopreliminaryresultsrele
Howusefularetheviewsofpublicschoolstudentsabouttheirteachers?Quiteuseful,accordingtopreliminaryresultsrele
Itisnevertooearlyforyoutolearnaboutthevalueofmoneyasateenager.Manyteenshaveno【B1】______whatittakestoearn
Itisnevertooearlyforyoutolearnaboutthevalueofmoneyasateenager.Manyteenshaveno【B1】______whatittakestoearn
Itisnevertooearlyforyoutolearnaboutthevalueofmoneyasateenager.Manyteenshaveno【B1】______whatittakestoearn
Itisnevertooearlyforyoutolearnaboutthevalueofmoneyasateenager.Manyteenshaveno【B1】______whatittakestoearn
Itisnevertooearlyforyoutolearnaboutthevalueofmoneyasateenager.Manyteenshaveno【B1】______whatittakestoearn
随机试题
《中华人民共和国义务教育法》规定,接受义务教育的儿童入学年龄最大为年满()周岁。
支气管哮喘的本质是
按照国家有关规定,勘察、设计、监理等服务的采购,单项合同估算价在()万元人民币以上,必须进行招标。
按照《建筑工程建筑面积计算规范》的规定,地下室、半地下室按()计算建筑面积。
财务内部收益率是()。
王某持有某上市公司的股票10000股。该上市公司2007年度的利润方案为每10股送3股。并于2008年6月份实施.该股票的面值为每股1元。上市公司应扣缴王某的个人所得税()元。(2008年)
“利用红色可以做什么”属于()发散思维。
在某乡村小学,教师在同一个教室内分别对不同年级的学生进行教学。这种教学组织形式是()。
以下程序需要实现的功能是:在C盘根目录下建立一个名为Students.txt的顺序文件。单击命令按钮后,输入4个学生的个人信息,包括name、sex和age,将这些信息写入文件中。请填空。PrivateSubForm_Click()
OscarWildewasa(n)
最新回复
(
0
)