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
When imaginative men turn their eyes towards space and wonder whether life exists in any part of it, they may cheer themselves b
When imaginative men turn their eyes towards space and wonder whether life exists in any part of it, they may cheer themselves b
admin
2011-01-02
61
问题
When imaginative men turn their eyes towards space and wonder whether life exists in any part of it, they may cheer themselves by remembering that life need not resemble closely the life that exists on Earth. Mars looks like the only planet where life like ours could exist, and even this is doubtful. But there may be other kinds of life based on other kinds of chemistry, and they may multiply on Venus or Jupiter. At least we cannot prove at present that they do not.
Even more interesting is the possibility that life on their planets may be in a more advanced stage of evolution. Present-day man is in a peculiar and probably temporary stage. His individual units retain a strong sense of personality. They are, in fact, still capable under favorable circumstances of leading individual lives. But man’s societies are already sufficiently developed to have enormously more power and effectiveness
than the individuals have.
It is not likely that this transitional situation will continue very long on the evolutionary time scale. Fifty thousand year’s from now man’s societies may have become so close-knit that the individuals retain no sense of separate personality. Then little distinction will remain between the organic parts of the multiple organism and the inorganic parts (machines) that have been constructed by it. A million years further on man and his machines may have merged as closely as the muscles of the human body and nerve cells that set them in motion.
The explorers of space should be prepared for some’ such situation. If they arrive on a foreign planet that has reached an advanced stage (and this is by no means impossible), they may find it being inhabited by a single large organism composed of many closely cooperating units.
The units may be "secondary"-machines created millions of years ago by a previous form of life and given the will and ability to survive and reproduce. They may be built entirely of metals and other durable materials. If this is the case, they may be much more tolerant of their environment, multiplying under conditions that would destroy immediately any organism made of carbon compounds and dependent on the familiar car bon cycle.
Such creatures might be relics of a past age, many millions of years ago, when their planet was favorable to the origin of life, or they might be immigrants from a favored planet.
Even most imaginative people have to admit that
选项
A、human societies are as advanced as those on some other planets
B、planets other than Earth are not suitable for life like ours to stay
C、it is difficult to distinguish between organic pa/ts and inorganic parts of the humm, body
D、organisms are more creative than machines
答案
B
解析
文章第一段中“Mars looks like the only planet where life like oars could exist,and even this is doubtful.”表达了对地球人在外星上存在的置疑,第五段"If this is the case, they may be much more tolerant of their environment,multi plying under conditions that would destroy immediately any organism made Of carbon compounds and dependent on the familiar carbon cycle.”说明外星不适合现在的人类居住,所以[D]是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/DoeO777K
0
专业英语八级
相关试题推荐
PrimaryFunctionsoftheFamilyThefamilyisabasicunitinasociety.Sociologistshaveclonemuchresearchaboutthefunc
Thename"QueenVictoria"【1】_____upapictureofasmall,plumpoldlady.Itishardto
ThroughaseriesofexperimentsanAmericanscientisthasobtainedanunderstandingofthesocialstructureofthemostcomplex
Burnoutcomeswhentherealityoflifeislessthanourexpectations.Andithasbecomeacommonpsychologicalproblem.Schoo
幸福可以被描绘成一种积极的情绪和一种愉快的心境。根据最近的民意测验,百分之六十到七十的美国人认为他们自己基本上是幸福的;而每二十个人中有一个人认为自己非常不幸福。心理学家们一直在研究构成幸福的因素。幸福是不可预卜的,而一个处于表面上最理想的环境中的
BurialCustomsinAncientEgyptEveryoneburnsfatdifferently.Thesearchfortheperfectdiethasneverbeenmorefrenzied.
1 Someconsumerresearchersdistinguishbetweenso-calledrationalmotivesandemotional(ornon-rational)motives.Inamarket
Africanbushmenarebeinggivencomputerssotheycanusetheirskillattrackingwildanimalstotakepartinaprojectthatwi
BenBuchananandAMagicBookTheTexasteenisdevouringthe672pagesofHarryPotterandtheHalf-BloodPrincewrittenby
C语言学基本知识。考查宏观语言学的几个分支。
随机试题
现代产品包括三个层次,其中产品经营者随着产品形体而提供各种服务需求的不同满足形式属于()
男,25岁,头外伤昏迷5分钟后清醒,送医院途中再度陷入昏迷,伴呕吐。体检:浅昏迷,双侧瞳孔等大等圆、光反射迟钝,左侧肢体肌力Ⅳ级,巴彬斯基征阳性。最可能的诊断是
载有“软条款”的信用证是对受益人危害极大的信用证,下列哪些规定应被视为信用证的“软条款”?
对掺用缓凝型外加剂、矿物掺和料或有抗渗性要求的混凝土,采用覆盖浇水养护的时间,不得少于( )。
设备的正常磨损寿命应该是()。
假设银行系统的原始存款额为1000亿元,法定存款准备金率为8%,超额准备金率为2%,现金漏损率为10%。根据以上资料,回答下列问题:下列关于商业银行存款准备金的等式中,正确的有()。
向特定的投资者发行,一般以少数与发行者业务联系密切的投资者为对象来募集资金的证券发行方式是()。
严守纪律的要点是:服从领导,听从命令,()。
Thequestionofwhetherwarisinevitableisone,whichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthis
(Itwas)the(splitof)elevensouthern(states)fromtheUnionin1861that(leading)totheCivilWarintheUnitedStates.
最新回复
(
0
)