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
With human footprints on the moon, radio telescopes listening for messages from alien creatures(who may or may not exist) .techn
With human footprints on the moon, radio telescopes listening for messages from alien creatures(who may or may not exist) .techn
admin
2013-01-12
77
问题
With human footprints on the moon, radio telescopes listening for messages from alien creatures(who may or may not exist) .technicians looking for celestial and planetary sources of energy to support our civilization, orbiting telescopes’ data hinting at planetary systems around other stars, and political groups trying to figure out how to save humanity from nuclear warfare that would damage life and eliminate on a planet wide scale, an astronomy book published today enters a world different from the one that greeted books a generation ago. Astronomy has broadened to involve our basic circumstances and our mysterious future in the universe. With eclipse and space missions broadcast live, and with NASA, Europe, and the USSR planning and building permanent space stations, astronomy offers adventure for all people, an outward exploratory thrust that may one day be seen as an alternative to mindless consumerism, ideological arguing, and wars to control dwindling resources on a closed, finite Earth.
Today’s astronomy students not only seek an up-to-date summary of astronomical facts; they ask, as people have asked for ages, about our basic relations to the rest of the universe. They may study astronomy partly to seek points of contact between science and other human endeavors: philosophy, history, politics, environmental action, even the arts and religion.
Science fiction writers and special effect artists on recent films help today’s students realize that unseen worlds of space are real places-not abstract concepts. Today’s students are citizens of a more real, vaster cosmos than conceptualized by students of a decade ago.
In designing this edition, the editors and I have tried to respond to these developments. Rather than jumping at the start into murky waters of cosmology, I have begun with the viewpoint of ancient people on Earth and worked outside across the universe. This method of organization automatically (if loosely) reflects the order of humanity’s discoveries about astronomy and provides a unifying theme of increasing distance and scale.
The word " murky" (Line 2, Para 4) most probably means______.
选项
A、darKenea or cloudea, hazy
B、deep and blue
C、dishonorable
D、dark and unpleasant
答案
A
解析
murky黑暗的;阴沉的;朦胧的。
转载请注明原文地址:https://kaotiyun.com/show/Oy9O777K
0
考博英语
相关试题推荐
Thewarwasthemostpeacefulperiodofmylife.Thewindowofmybedroomfacedsoutheast.Mymotherhadcurtainedit,butthat
Waterwillevaporatefromanywettedsurface.A.significantlylargefractionoftherainfallthatfallsonlandisreturnedto
Waterwillevaporatefromanywettedsurface.A.significantlylargefractionoftherainfallthatfallsonlandisreturnedto
Hewassoconvincedthatpeopleweredrivenby______motivesthathecouldnotbelievethatanyonecouldbeunselfish.
Foryears,doctorshavegivencancerpatientsthreemaintreatments:surgery,radiationandchemotherapy.Nowresearchersared
Researcherswhorefusetosharedatawithothersmay【31】otherstowithholdresultsfromthem,【32】astudybyhealth-policyanalys
A【51】offoreignwordsstilllooklikeforeignwords;thereareoftenexpressionswhich【52】originallyusedbypeoplewhowantedt
TheEnglishvocabularyisknownfora(n)______ofwordswhicharecomparativelyseldomusedinordinaryconversations.
Whatwecallnatureis,_______,thesumofthechangesmadebyallthevariouscreaturesandnaturalforcesintheirintricate
Certainlynocreatureintheseaisodderthanthecommonseacucumber.Alllivingcreatures,especiallyhumanbeings,havethei
随机试题
某研究所的员工构成情况是:所有的工程师都是男性,并非所有工程师都是研究生,并非所有研究生都是男性。由此可以推出:
假定某国2010年进口总额为50亿美元,出口总额为100亿美元,该国GDP为800亿美元。试计算:(1)该国贸易为逆差还是顺差,差额是多少。(2)计算该国的对外贸易依存度。(计算结果保留到整数位)
上呼吸道
一般肾囊肿的常见临床表现是
高层主体建筑内变配电所()设置装有可燃油的电气设备。
建筑防火是指在建筑设计和建设过程中采取防火措施,以防止火灾发生和减少火灾对生命财产的危害,通常包括()。
出入境集装箱均须向检验检疫机构报检并实施卫生检疫。( )
小王一家三口人,储蓄不多。小王在某外资企业工作,经常出差在外,是家庭的主要收入来源,妻子为教师,收入不高,孩子2岁。为防止小王发生意外而严重危及家庭生活支出及培养孩子的经济来源,该家庭以小王为被保险人,购买了一张15年期家庭收入保险单,每月收入保险金为20
半殖民地半封建社会的社会性质,决定了近代中国不可能是一个独立的民主国家。外部没有民族独立,而受帝国主义压迫;内部没有起码的资产阶级民主,反动统治阶级凭借强大的反革命武装对人民实行独裁恐怖统治。这种社会性质决定了中国革命进程的一个主要形式是()。
Youwillhearfiveshortrecordings.Foreachrecording,decidewhichaspectofconductinginterviewseachspeakerconsiderspar
最新回复
(
0
)