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
If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and
If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and
admin
2016-04-30
60
问题
If our solar system has a Hell, it’s Venus. The air is choked with foul and corrosive sulfur, heaved from ancient volcanoes and feeding acid clouds above. Although the second planet is a step farther from the sun than Mercury, a runaway greenhouse effect makes it hotter indeed It’s the hottest of the nine plants, a toasty 900 degrees Fahrenheit of baking rocky flats from equator to poles. All this under a crushing atmospheric pressure 90 times that of where you’re sitting now. From the earthly perspective, a dead end. It must be lifeless.
"Venus has nothing," is the blunt word from planetologist Kevin Zahnle of NASA Ames Research Center in California’s Silicon Valley. "We’ve written it off."
Yet a small group of advanced life-forms on Earth begs to differ, and theorizes that bizarre microbial ecosystems might have once populated Venus and, in fact, may be there still. Members of this loose band of researchers suggest that their colleagues have water too much on the brain, and are, in a sense, H
2
O chauvinists(盲目的爱国者).
"Astrobiologists are neglecting Venus due more to narrow thinking than actual knowledge of the environment, or environments, where life can thrive," says Dirk Schulze-Makuch, a geobiologist at the University of Texas at El Paso who recently co-authored a Venus-boosting paper in Astrobiology with colleague Louis Irwin.
The bias against life on Venus is partly rooted in our own biology. Human experience instructs that liquid water, preferably lot of it, is essential for life. In search for extraterrestrial life, we obsess over small rivers in Mars’ surface apparently carved by ancient gushes of water, and delight in hints of permafrost(永久冻结带)just underneath its surface.(By comparison, Venus isn’t even that interesting to look at: A boring cue ball(台球的白色母球)for backyard astronomers, its clouds reflects 75% of visible light.)Attention and then funding follow the water: Three more landers will depart for Mars this spring, and serious plans for sample-return missions hover in the midterm future.
"If you have limited resources, you base exploration on what you know," says Arizona State University planetary geologist Ronal Greeley. It’s like losing your keys on the way home at night: The first place you look is under the streetlights not because they’re more likely to be there, but because if they are, you’ll spot them. For astrobiologists, the streetlights are the spectral(光谱的)lines for water, and they’ve spotted that potential on Mars, Jupiter’s moon Europa, even Neptune’s moon Triton. Not on the baking rocky flats of Venus.
What do we learn from the passage about Venus and Mars?
选项
A、The atmospheric pressure of Venus is stronger than that of Mars.
B、Venus attracts more attention and funding than Mars.
C、Venus is closer to the sun than Mars.
D、Venus looks more beautiful than Mars.
答案
C
解析
从首段第3句可以知道水星是离太阳最近的行星,而金星只比它离太阳远一点,也就是说金星比其他7个行星离太阳都要近,当然也就比火星离太阳近了,因此C为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/FtG7777K
0
大学英语六级
相关试题推荐
YouDon’tHavetoBe18:GoingtoCollegeasanAdultA)Everysooften,especiallywhenI’mfeelingdown,Itakeoutmyoldcoll
Mostpeopledon’tenjoyfacingthedifficultsituationsthatsometimesoccurwithcoworkersintheworkplace.Suchsituationsma
FilmSchoolsA)Filmschoolsandfilmdirectingschoolsprovideaspiringfilmstudentswithasolidunderstandingofthemanyfac
FilmSchoolsA)Filmschoolsandfilmdirectingschoolsprovideaspiringfilmstudentswithasolidunderstandingofthemanyfac
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterprise.It’s【B1】______economyinwhichconsumersdeterm
A、AwarbetweenBritainandtheUnitedStates.B、AsmallbattlebetweentheAmericanandtheBritishtroops.C、TalksbyGeneral
Awisemanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceoffice
Awisemanoncesaidthattheonlythingnecessaryforthetriumphofevilisforgoodmentodonothing.So,asapoliceoffice
A、Nomedicinecouldsolvethewoman’sproblem.B、Thewomanshouldeatlesstolosesomeweight.C、Nothingcouldhelpthewomani
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,therewilleventuallynotbeenoughresourcesleftto【B1】
随机试题
A.宋内志贺菌B.痢疾志贺菌C.福氏志贺菌D.鲍氏志贺菌E.痢疾志贺菌和鲍氏志贺菌引起痢疾表现最轻的菌群是
梅毒性主动脉炎表现为
妊娠初期,恶心呕吐,呕吐痰涎,中医辨证为妊娠初期,恶心呕吐,呕吐清涎,中医辨证为
下列选项中,属于人民法院应当裁定终结执行情形的有()。
在我国,针对中小企业板块上市公司股本较小的共性特征,实行比主板市场更为严格的信息披露制度,其中包括( )。
用人单位招用劳动者,可以扣押劳动者的居民身份证件和其他证件,但不得要求劳动者提供担保。()
作为文化的重要组成部分,传统节庆的意义是______的。对于一个民族而言,______文化底色的优秀节日习俗,正如优秀的传统文化一样,足以凝神聚气、强基固本,反之则可能让社会群体失去向心力,沦为跟风一族。依次填入画横线部分最恰当的一项是()。
甲下班时,误将同事乙的电脑拿回家。晚上该电脑被丙偷走。以下说法中正确的是()
《花与美》杂志受A市花鸟协会委托,就A市评选市花一事对杂志读者群进行了民意调查,结果60%以上的读者将荷花选为市花,于是编辑部宣布,A市大部分市民赞成将荷花定为市花。以下哪项如果属实,最能削弱该编辑部的结论?
Whatattractscustomers?Obviouslythequalityofaproductdoes,butvisualimages【C1】______agreatdeal.Itisnotonlytheim
最新回复
(
0
)