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
2024-04-15
8
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/3556728.html
相关试题推荐
IfthepopulationoftheEarthgeesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgeesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgeesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgeesonincreasingatitspresentrate,there
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
InJanuary1989,theCommunityofEuropeanRailwayspresentedtheirproposal
随机试题
I’ve___________(向几所美国学校申请了)scholarships.appliedtoseveralAmericanschoolsfor
肠鸣音活跃常见于:()A.腹膜炎 B.肠麻痹 C.机械性肠梗阻 D.急
患者,男性,35岁。因单位组织常规体检发现身体异常,拟诊肝硬化(代偿期)而收入院
功善温补肾阳的方剂是A.肾气丸B.地黄饮子C.阳和汤D.左归丸E.以上均非
原发性甲状腺功能减退的最早表现下列哪项升高A.TRHB.TSHC.TBGD.TG
J54、在正常运行情况下不接地系统中性点位移电压不得超过().(A)
茶叶是中国人喜爱的健康饮品。一般人将茶叶冲泡饮用几次之后,就将喝剩的茶叶倒掉。某
共用题干 口腔临床试验是口腔流行病学常用的一种研究方法,现拟进行一项试验研究,
在建设工程施工过程中,加快施工进度的组织措施包括()。A.采用先进的施工方法
患者男,65岁,咳嗽,痰中带血伴喘息3个月,头面部及双上肢肿胀2周,吸烟30支/
最新回复
(
0
)