首页
登录
职称英语
If the population of the Earth gees on increasing at its present rate, there
If the population of the Earth gees on increasing at its present rate, there
游客
2023-08-19
28
管理
问题
If the population of the Earth gees 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] 【B8】
选项
答案
break down
解析
此处需要动词充当谓语。短语breakdown的意思是“分解”。
转载请注明原文地址:https://tihaiku.com/zcyy/2940468.html
相关试题推荐
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
随机试题
A.daydreamB.disagreementC.factuallyD.ifE.inevitableF.inseparabl
Thispassagegivesinstructionsinusingthetumble-drier.[br]Verybulkylarge
Yearsago,doctorsoftensaidthatpainwasanormalpartoflife.Inpa
患者女,28岁。出现意识障碍,查体见瞳孔缩小,该患者可能是A.吗啡中毒 B.颠
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
已知条件与要达到的目标都比较含糊,问题情境不明确、各种影响因素不确定,不易找出解
在爆炸性气体环境中应采取防止爆炸的措施。对区域内易形成和积聚爆炸性气体混合物的
关于预制涵洞拱圈的安装施工,正确的有()。A.预制拱圈安装后,成品拱圈吊装孔,
双胍类降糖药物的降糖作用机制为A.促进餐后胰岛素的分泌 B.促进基础胰岛素的分
施工项目年度成本分析的重点是()。 A.通过实际成本与目标成本的对比
最新回复
(
0
)