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
37
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://jikaoti.com/ti/7YZFFFFM
0
大学英语六级
相关试题推荐
Muchofthelanguageusedtodescribemonetarypolicy,suchas"steeringtheeconomytoasoftlanding"or"atouchonthebrake
AproposedRussianbanonEuropeanUnionmeatexportscouldjeopardizeRussia’saspirationstojointheWorldTradeOrganization
A、Toreplacephysicaltherapy.B、Tocontrolbrainseizures.C、Topreventheartdisease.D、Torelievetension.DA的表述太过绝对,可排除。问题询问
Womenwhoapplyforjobsinmiddleorseniormanagementhaveahighersuccessratethanmen,accordingtoanemploymentsurvey.
Americaisacountrythatnowsitsatopthecherishedmyththatworkprovidesrewards,thatworkingpeoplecansupporttheirfam
Amongstthemostpopularbooksbeingwrittentodayarethosewhichareusually【B1】______assciencefiction,Hundredsof【B2】____
Areyouworriedabouttherisingcrimerate?Ifyouare,thenyouprobablyknowthatyourhouse,possessionsandpersonsareinc
A、Thestrengthofitsshipbuildingindustry.B、Thephysicalfeaturesoftheriveritself.C、Theabundanceoffruit,vegetables,
A、Haveagreatersenseofduty.B、Cangethigherpay.C、Canavoidworkinghard.D、Canavoidbusytraffic.D信息明示题。先读选项再结合文中第二段列出的
WhatcanwefindinAndasibe?ThementionoftheextinctionoftheUSautoindustryisusedtoshow
随机试题
如何处理无级变速器控制阀上其他滑阀卡滞引发的故障?
三羧酸循环中的关键酶有
A黄色B红色C绿色D蓝色E黑色药品储存期间有问题待处理的药品设有的标记颜色是
患者,女,24岁。2周前感冒,发热、心悸、气促、胸痛3天。心率98次/min,频发期前收缩。心尖区可闻奔马律,肺(-)。心电图示多源频发室性期前收缩。LDH增高。可能的诊断是
下列符合《中华人民共和国防沙治沙法》中沙化土地封禁保护区相关规定的是()。
背景某火力发电厂两台大型锅炉安装工程,业主通过公开招标和资格预审的方式选定了A公司。签订合同时,业主与A公司在施工合同中对工程预付款、工程进度、工程质量、工程价款和违约责任等都做了具体约定。施工合同在履行过程中发生下列事件:事
集体性科学教育活动
科举制(南京大学2011年中国古代史复试真题)
以下哪个不是C++语言中的有效标识符?
A、Frogandeagle.B、Snakeandpigeon.C、Elephantandlion.D、Wolfandtiger.A
最新回复
(
0
)