首页
登录
职称英语
Venus, one of the four inner planets of our solar system, is the closest bo
Venus, one of the four inner planets of our solar system, is the closest bo
游客
2023-11-21
76
管理
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. [br] 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://tihaiku.com/zcyy/3207767.html
相关试题推荐
Thethieves______thepossibilityofthealarmsystemsoundingA、overtookB、over
Hewas______totellthetrutheventobisclosestfriend.A、toomuchofacowar
______thattheformationofthesun,theplanets,andotherstarsbeganwithth
______isthecenterofourplanetarysystemwasadifficultconcepttograspin
Thelargestsystemservinge-mailmessengersistheInternet,a______ofmillio
Venus,oneofthefourinnerplanetsofoursolarsystem,istheclosestbo
_______one-celledorganisms,nearlyallanimalshaveanervoussystemofsomek
Theideaoftravelingthrough_______spacetootherplanetsinterestsmanypeop
______isthecenterofourplanetarysystemwasadifficultconcepttograspin
Hewas______totelltrutheventohisclosestfriend.A、toomuchofacowardB、
随机试题
Whatcausedthemudslideaccordingtotheresearchhydrologist?[br][originalt
TheGuildfordFour,freedlastweekafterspending15yearsinprisonforcri
Ibelievethereis______aghostintheworld.A、nosuchthingasB、notsuchthing
AccordingtoEllen,theincreasingdemandforhiringisdueto[originaltext]M:
共用题干 早产儿,生后16小时,第二产程延长,吸引器助产,出生时窒息2分钟,复
使用栓剂时方法不正确的是A.将栓剂尖端朝前插入 B.左侧卧位并弯曲右膝 C.
患者,男,79岁,患“冠心病”3年余,经药物治疗后症状改善。9个月前无明显诱因出
根据《处方管理办法》,药师不得调剂的处方有A.不规范的处方 B.不能判定其合法
与A型行为密切相关的心身疾病是A.十二指肠溃疡 B.糖尿病 C.冠心病 D
10名女油漆工在一大罐内手工涂漆,未采取个人防护措施,罐内亦无通风设备。工作不
最新回复
(
0
)