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
Venus, one of the four inner planets of our solar system, is the closest body in the sky apart from the Moon, sometimes coming o
Venus, one of the four inner planets of our solar system, is the closest body in the sky apart from the Moon, sometimes coming o
admin
2010-01-15
82
问题
Venus, one of the four inner planets of our solar system, is the closest body in the sky apart from the Moon, sometimes coming only 40 million km from the Earth. Thus, in the not- so-distant future, when man has colonized the Moon, he will start looking at Venus as his next step into space.
As it is now, Venus’s environment is totally unfavourable to human life. Its surface temperature is almost 480℃. Its face is almost completely hidden from view by poisonous clouds of 90% carbon dioxide.
But scientists have a simple plan which, they predict, could make Venus habitable.
With the help of rockets, they plan to bombard the carbon dioxide clouds with colonies of blue-green algae. Experiments carried out on Earth have proved that blue-green algae can survive and reproduce normally in such an environment. The algae will consume the carbon and liberate the oxygen. They reproduce so quickly that the carbon dioxide could be broken down within one year. After that, the surface of Venus will be partly visible to telescopes on Earth.
The increase in oxygen will have spectacular effects on the desert planet. As oxygen re- places the carbon dioxide, the sun’s infra-red radiation, which up to that moment was trapped under the clouds of carbon dioxide, will escape into space and the temperature of the lower atmosphere will decrease. Soon, water will collect from the atmospheric vapor and rain will start falling for the first time. That first rain will never reach the surface. It will vaporize into steam high up in he Venusian atmosphere, but it will have a very important effect. It will lower the ground temperature, perhaps by 35℃. Soon the rain will fall again and again, until the ground temperature is about 70℃. Then the "Big Rain" will strike the soil of Venus for the first time and the clouds will partly clear away, leaving an oxygen-rich atmosphere and a temperature cool enough to sustain hardy plants and animals from Earth.
According to the passage, which of the following statements is true?
选项
A、Venus is the closest body to the Earth in the sky.
B、Venus will be man’s first colony in the space.
C、The Moon will first be made habitable to man.
D、The surface of Venus can be seen clearly through a telescope.
答案
C
解析
根据第一段可以判断此题选C。
转载请注明原文地址:https://kaotiyun.com/show/hnnK777K
0
专业英语四级
相关试题推荐
StudyActivitiesinUniversityInordertohelpcollegeanduniversitystudentsintheprocessoflearning,fourkeystudya
A、Frenchcourse.B、Artisticactivities.C、Aninternship.D、Ajoboffer.BMissChen提到,她虽然并不后悔缩短大学时光,但她本应多花点时间在戏剧和音乐活动(dramatican
Working-classfamiliesintheUnitedStatesareusuallynuclear,andmanystudiesindicatethatworking-classcouplesmarryf
CharacteristicsofAmericanCultureI.PunctualityA.Goingtothetheater:be【T1】________twentyminutesprior
FiveCommonMistakesinConversationsandTheirSolutionsI.NotlisteningA.Problem:mostpeople【T1】________
GreenhouseEffectI.【T1】_____ofthegreenhouseeffectA.About【T2】_______ofthesunlightreachestheplanet’ssurfaceandisr
PassageTwo(1)WhenWinstonChentoldhisfriendsthathehadquithisjobaschieftechnologyofficeratasoftwarecompan
(1)LarrySummersisright;thisyear’sFedsymposiuminJacksonHolewastriplydisappointing.Intheweeksbeforethegatheri
Foxesandfarmershavenevergotonwell.Thesesmalldog-likeanimalshavelongbeenaccusedofkillingfarmanimals.Theyare
IconfessthatwhenfirstImadeacquaintancewithCharlesStricklandIneverforamomentdiscernedthattherewasinhimanyth
随机试题
会计账簿
在PowerPoint2010p,若要在“幻灯片浏览”视图中选择多张不连续的幻灯片,应先按住()键。
A.ClrB.TpC.MICD.CpE.Clh
患者,男,35岁,3个月来发热,乏力,盗汗,食欲缺乏。查体;体重减轻,一般状况尚可。实验室检查:痰结核分枝杆菌阳性,初步诊断为肺结核收住入院。医嘱行PPD试验。PPD试验结果阳性的判定标准为皮肤硬结直径达
基金公司实行内部监察稽核的目的是()
产生“劣币驱逐良币”现象的货币制度是()。
甲公司是一家上市公司,注册资本1亿元。甲公司最近3个会计年度连续盈利,最近3年公司实现的年均可分配利润达到3000万元,自2008年以来没有以任何形式向股东分配利润。2011年2月1日,在公司股东大会上,董事会提交了如下议案:(1)增选公司董事的方案:鉴
已知某单模光纤的工作波长为1550nm,其传输损耗为0.2dB/km,试求传输多少公里后光功率下降为原来的一半?
给定资料材料1“某地医院出现人感染‘SK5’病毒死亡案例”“疫苗有害,为了孩子的健康,请远离疫苗”“生长期1个月,街头‘速成鸭’大都含激素”……2017年4月19日,北京地区网站联合辟谣平台和腾讯较真平台携手发布了《谣言易感人群分析报告
Formanyyears,Hawaiihasbeenamagicnametopeoplewholiketotravel.PeopleonbothsidesofthePacificOcean,inJapana
最新回复
(
0
)