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
63
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.
What do we learn from the passage about Venus and Mars?
选项
A、The atmospheric pressure of Venus is stronger than 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
从原文该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七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/4Os7777K
0
大学英语六级
相关试题推荐
TheAmericanwarondrugshasgottenallthetypeinrecentyears,butalcoholismisstillthenation’smostserious【B1】______.
TreesTomany,thewordtreesevokesimagesofsuchancient,powerful,andmajesticstructuresastheredwoodandthegiant
TheNextDisaster:AreWeReady?AreWeReallyPrepared?AftertheattacksonSeptember11andthehurricanesthatslammedt
Inabout45years,temperaturesonEarthwillbehotterthanatanytimeduringthepastonemillionyears,saystheU.S.【B1】____
Directions:Forthispart,youareallowed30minutestowriteashortessayentitledHowtoWriteanEnglishResume?Youshould
Weshouldbearinmindthat___________________(学习之于心灵,就像食物之于身体一样).
TheSciencethatImitatesNature’sMechanismsAEuropeanindustrialistnotlongagobecameverysuspiciousaboutAmericanpu
Aslongasherparentscanremember,13-year-oldKatieHarthasbeentalkingaboutgoingtocollege.Hermother,Tally,afinanc
A、DevelopmentoftheNationalFlagB、PoweroftheNationalFlagC、TypesofFlagsD、UsesofFlagsA选项都涉及到flags,且该题可能考查短文大意或题目。短文按
Havinghadherasaprofessorandadviser,Icantellyouthatsheisaninspirationalforcewhopushesherstudentstoexcel___
随机试题
A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联
设稳压泵的消火栓给水系统图是()。
存款是银行对存款人的负债,是银行最主要的资金来源。()
我国金融信托公司业务不包括()。
经全体合伙人协商一致,普通合伙企业中合伙人也可以用劳务出资。()
常模样本中6年级的算术平均分为35,某儿童在算术测验中得35分,那就是说,该儿童的算术年级当量是()。
无论什么主义,什么派别的成见,都不可存在胸中的。也更不必预想到读者对于这作品的批评和论调。写完了,事情就完了,这样才能有些“真”的意味。如太顾忌,弄得百不自由,畏首畏尾,结果就是批评家和读者出意思,派作者来创作,与科举时作场屋的文章何异?这段文字主要想表达
一、注意事项1.申论考试,与传统作文考试不同,是对分析驾驭材料的能力与对表达能力并重的考试。2.作答参考时限:阅读资料40分钟,作答110分钟。3.仔细阅读给定的资料,按照后面提出的“申论要求”依次作答。二、给定资料材料一
Readthearticlebelowaboutcorporateculture.ChoosethecorrectwordtotilleachgapfromA,B,CorDontheoppositep
YouprobablythinkofHyundaiasthemakerofworld-class,highquality,affordablemotorcars--andyou’reright.ButHyundai
最新回复
(
0
)