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
2023-08-21
68
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] 【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/2945856.html
相关试题推荐
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
Thefirsttimeyourbosssuggeststhatyouformallypresentsomethingtoyou
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
HowMarketersTargetKidsA)Kidsrepresentanimportantdemo
随机试题
Aresearcherdiscoveredthatpeoplewhohavelowlevelsofimmune-systemactivit
Tonyistalkingaboutthefriendsandthefood______interesthim.A、whichB、whoC
[originaltext]M:Hey,Linda!Longtimenosee!Iheardthatyou’regoingonab
给定资料: 2015年12月6日,一则名为《S市城管也太欺负外地人了》的帖
计算个人可支配收入,需要在个人收入基础上减除()A.政府向居民支付的利息
女性患者,29岁,妊娠5个月,既往有糖尿病病史2年,此次检测空腹血糖8.9mmo
下列可作为抗真菌药物使用的是A.特比萘芬 B.磺胺嘧啶 C.氧氟沙星 D.
?关于个案工作中任务中心模式的说法正确的是()。A.任务中心模式的焦点是为服务对
依据睡眠状态合理用药早醒者可选用()A.氟西泮 B.氯美扎酮 C.谷维素
商业银行的最基本的职能是()。A.货币制造 B.价值创造 C.信用中介
最新回复
(
0
)