首页
登录
职称英语
If the population of the Earth goes on increasing at its present rate, there
If the population of the Earth goes on increasing at its present rate, there
游客
2024-04-14
40
管理
问题
If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to【B1】______ life on the planet. By the middle of the 21st century, if present【B2】______ continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the 【B3】______ conditions on Earth will make it necessary for us to look for open space somewhere else.
An American scientist, Professor Carl Sagan, believes that before the earth’s resources are completely【B4】______, it will be possible to change the atmosphere of Venus and so create a new world almost as large as Earth itself. The difficulty is that Venus is much hotter than the Earth and there is only a tiny amount of water there.
Sagan【B5】______ that algae(藻类), organism that can live in 【B6】______ hot or cold atmospheres and at the same time produce oxygen, should be【B7】______ in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will then fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the algae will【B8】______ the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler but before man can set foot on Venus, it will be necessary for the oxygen to produce rain. The【B9】______ of the planet will still be too hot for men to【B10】______ it but the rain will eventually fall and in a few years something like Earth will be reproduced on Venus. [br] 【B5】
选项
答案
proposes
解析
此处需要谓语动词。Sagan为人名,根据全文时态可知这里要用第三人称单数。propose意为“提议”。
转载请注明原文地址:https://tihaiku.com/zcyy/3555105.html
相关试题推荐
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
随机试题
Themajorityofsuccessfulseniormanagersdonotcloselyfollowtheclassic
ThinkTwice:It’sAllRightAlegendaryfigureinmusic
WelcomeSpeech1.RoomallocationRoomnumberThebeginningletterrefersto
ARVshaven’tbeenusedwidelytopreventHIVtransmissionorinfectionforlack
Whenaconsumerfindsthatanitemsheorheboughtisfaultyordoesnotli
闭合导线和附合导线在计算( )时,计算公式有所不同。A.角度闭合差和坐标增量
安宫牛黄丸有的功效是A.清热解毒,安神定志B.清热开窍,安神祛痰C.清热解毒,开
根据下列处方选出各成分的作用处方:磺胺嘧啶混悬剂磺胺嘧啶100g氢氧化钠16g枸
患儿女,10岁。给宠物犬洗澡后即出现咳嗽、咳痰伴喘息发作,诊断为哮喘。引起该患儿
党的全部理论和全部工作要体现时代性、把握规律性、富于创造性,是指 A.解放思想
最新回复
(
0
)