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
2010-12-04
38
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 Calitfornia’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, H2O 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 E1 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.
It can be inferred from the passage that the small group of advanced life-forms on Earth believed that______.
选项
A、life could exist in hot environment
B、life could exist without water
C、there are still lives on Venus
D、there used to be lives on Mars
答案
B
解析
原文该句表明,这一个小团体的研究人员认为那些宣称Venus上没有生命的科学家“are,in a sense, H2O chauvinists”(某种意义上,他们太盲目认为水是生命存在的基本条件。)也就是说,这个团体相信生命的存在不一定需要水,因此B为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/ZOs7777K
0
大学英语六级
相关试题推荐
TheAmericanwarondrugshasgottenallthetypeinrecentyears,butalcoholismisstillthenation’smostserious【B1】______.
A、Youmustjoinafootballteamtolearnalanguage.B、Languagelearningissomewhatlikeplayingfootball.C、Inordertolearn
A、Unemployment.B、Familybreakup.C、Mentalproblems.D、Drinking.B信息明示题。女士问在街上流浪的是哪些人,男士说有失业的,有精神病患者,还有一些酒鬼,并没有提及家庭破裂者,排除B。
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themakingandsellingofdrugshavealonghistoryandarecl
A、Gunfightsendexplodingcars.B、Depressingstories.C、Intensecharacters.D、Darkbackground.A信息明示题。女士说主流电影里除了枪战和爆炸的汽车以外什么都没有
A、ThewaytoensurethesurvivalofthehumanraceonVenus.B、ThewaytobreedorganismsonVenus.C、Thewaytoreducethepopu
TheSciencethatImitatesNature’sMechanismsAEuropeanindustrialistnotlongagobecameverysuspiciousaboutAmericanpu
Amongstthemostpopularbooksbeingwrittentodayarethosewhichareusually【B1】______assciencefiction,Hundredsof【B2】____
Letussupposethatyouareinthepositionofaparent.Wouldyouallowyourchildrentoreadanybooktheywantedtowithoutf
Whiletheworld’sflufightershaveconcentratedoncounteringtheH1N1swineflu,birdfluH5N1hasquietlycontinuedtotakei
随机试题
下列哪一项不是风热致惊之急惊风的临床表现( )
农村村民申请宅基地,须由()批准。
限制民事行为能力人订立的合同,( )有效。
递延年金的特点有()。
决定商品价值量的是生产该种商品的:
2006年10月,刘某(女)与宋某(男)结婚时签订书面协议,约定婚后所得财产归各自所有,各自对外所欠的债务都由各自清偿。婚后,由于宋某经常赌博.、酗酒而欠下债务7万余元。刘某为此经常规劝宋某改邪归正,但宋某非但不听,还经常打骂刘某。一日,因宋某酗酒晚归,刘
Onecandredgeupancientinstancesof"so"asasentencestarter.Inhis14th-centurypoem"TroilusandCriseyde,"Chaucerlaun
OldChinesearenotusedtobuythingson______andarelikelytosaveasmuchmoneyaspossible.
Whydomanyoftheboysavoidcertaininstruments?
TheFrenchshakehandswitheveryone(family,children,strangers)athome,onthewaytowork,atwork,onthewayfromwork,e
最新回复
(
0
)