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
Until the very latest moment of his existence, man has been Bound to the planet on which he originated and developed. Now he ha
Until the very latest moment of his existence, man has been Bound to the planet on which he originated and developed. Now he ha
admin
2010-02-26
58
问题
Until the very latest moment of his existence, man has been
Bound to the planet on which he originated and developed.
Now he had the capability to leave that planet and move 【S1】______
out into the universe to those worlds which he has known
previously only directly. Men have exploited parts of the moon, 【S2】______
put spaceships in orbit around another planet and possibly within
the decade will land into another planet and explore it. Can we be 【S3】______
too bold as to suggest that we may be able to colonize other 【S4】______
planet within the no-too-distant future? Some have advocated 【S5】______
such a procedure as a solution to the population problem: ship the
excess people off to the moon. But we must keep in head the 【S6】______
billions of dollars we might spend in carrying out the project. To
maintain the earth’t population at its present level, we could have
to blast off into space 7,500 people every hour of every day of the
year.
Why are we spending so little money on space 【S7】______
exploration? Consider the great need for improving many aspects 【S8】______
of the global environment, one is surely justified in his
concern for the money and resources that they are poured into 【S9】______
the space exploration efforts. But perhaps we should look at
both side of the coin before arriving hasty conclusions. 【S10】______
【S1】
选项
答案
本文用的是一般现在时,故had应为has。
解析
转载请注明原文地址:https://kaotiyun.com/show/pidK777K
0
大学英语六级
相关试题推荐
Migrationisusuallydefinedas"permanentorsemi-permanentchangeofresidence."Thisbroaddefinition,ofcourse,wouldinclu
A、AvacationtriptoYellowStonePark.B、Alecturebyavisitingprofessor.C、Herbiologythesis.D、Aresearchproject.DWhatd
Accordingtothepassage,staticelectricitycanbecausedby______.Whateffectdoesexcessivepositiveionshaveonsomepeo
A、Samegene,samelife.B、Identicaltwinsalsohaveverydifferentlives.C、Theelementofenvironmentismoreimportant.D、None
A、Cousins.B、Auntandnephew.C、Nieceanduncle.D、Aclientandasecretary.AW:IsAuntMargaretin?Ihavegotsomethingimpor
A、Hecan’tfindhisofficekey.B、Hehasmisplacedsomeexams.C、Heisunabletospeak.D、Hedoesn’tlikehisclassroom.CWhat’s
A、Heshouldn’thaveapologized.B、Hewillfindabetterwayofapologizing.C、Hecouldn’tfindarightwordtomakeanapology.
Intellectualpropertyrightscanpromotecreativeindividuals’willingnesstosharetheirtalentwithsociety.Aworkcontainin
A、Heisnotthatfarawayifshewantstovisit.B、Hedoesn’tbelievethatshewillreallymisshim.C、Hewelcomesherphonecal
Racket,dinclamor,noise.Whateveryouwanttocallit,unwantedsoundisAmerica’smostwidespreadnuisance.Butnoiseismore
随机试题
在数字通信系统中用于表示信息的最小单位是()。
简单相关系数的基本原理是把每一对观测值(xi,yi)中的xi值与均值的距离与相应的yi值与均值的距离()
最常见引发小儿惊厥的原因是()。
下列可以成为伪造、变造、买卖武装部队公文、证件、印章罪的犯罪对象有()。
经常预算的收入来源主要是()。
下列各组词语中对“象、像、相”的使用,完全正确的有()。
由1、2、3、4、5、6这6个数字组成不同的六位数,所有这些六位数的平均值是:
同事爱在领导面前显摆自己,又对领导说你坏话,你该怎么办?
竹子清丽俊逸、挺拔凌云的姿质令风流名士们沉醉痴迷,_____________。世界上最早的一部植物专谱——戴凯之的《竹谱》正是在这种风气下以韵文的形式诞生的。①对竹啸吟终日不辍者亦有之②一时间,闻有好竹即远涉造访而不通名姓者有之③这一时期,文人雅士赋
Whenolderpeoplecannolongerremembernamesatacocktailparty,theytendtothinkthattheirbrainpowerisdeclining.Buta
最新回复
(
0
)