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
26
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] 【B4】
选项
答案
exhausted
解析
根据空格前的系动词are,推断此处用过去分词表被动。注意exhaust“耗尽”不要漏掉字母h。
转载请注明原文地址:https://tihaiku.com/zcyy/2940464.html
相关试题推荐
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
随机试题
USHigherEducationLurkingbehin
IwenttoaCatholicboysschoolinBlackpoolintheNorthofEngland.Inmy
Onaverage,Americankidsages3to12spent29hoursaweekinschool,eigh
2019年4月,习近平总书记亲临重庆视察指导,对重庆提出发挥“三个作用”的殷
以下不属于股权投资基金清算必要程序的是()。A.支付清算费用 B.编制清
(2016年真题)在报价驱动市场中处于关键性地位的是()。A.做市商 B
住房公积金财务管理的基本原则不包含( )。A.降低运作风险,保证住房公积金
乳腺癌淋巴转移的主要途径是A.同侧腋窝淋巴结 B.同侧胸骨旁淋巴结 C.颈部
关于城市燃气输配管道的压力表述中,正确的有( )。A.高压燃气管道A:0.8<
( )是绩效管理体系的收尾部分,同时也是人力资源管理其他子系统正常运行的基础和
最新回复
(
0
)