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
2023-08-20
39
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 trends continue, we will have【B2】_____all the oil that drives our cars, for example. Even if scientists develop new ways of 【B3】_____the human race, the crowded conditions on Earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our【B4】_____ are capable of supporting life at present. One possible solution to the problem has recently been suggested by an American scientist, Prof. Carl Sagan.
Prof. Sagan believes that before the earth’s resources are completely【B5】_____, it will be possible to change the atmosphere of Venus and so create a new world almost as large as Earth itself.
Sagan proposes that algae(藻类), an【B6】_____that can live in extremely 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【B8】_____short time, the algae will【B9】_____the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler. The oxygen will produce rain and in a few years something like Earth will be【B10】_____on Venus. [br] 【B9】
选项
答案
break down
解析
根据空格所在位置可知,空格处应填入动词(词组)。结合录音可填入break down,意为“分解”。
转载请注明原文地址:https://tihaiku.com/zcyy/2942032.html
相关试题推荐
Videogameshavebecomeincreasinglypopularinbotharcadesandtheaverage
Withincreasingprosperity,WesternEuropeanyouthishavingaflingthatis
Withincreasingprosperity,WesternEuropeanyouthishavingaflingthatis
Withincreasingprosperity,WesternEuropeanyouthishavingaflingthatis
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
GrayingPopulationStaysinthePinkA)Elderlypeoplear
GrayingPopulationStaysinthePinkA)Elderlypeoplear
GrayingPopulationStaysinthePinkA)Elderlypeoplear
GrayingPopulationStaysinthePinkA)Elderlypeoplear
随机试题
Whatistheconversationmainlyabout?[br][originaltext]M:Whyareyoulookin
Heseessmokingas(health)______.unhealthy他认为吸烟有害健康.本题考查词性转换.句型结构“seesth.as+a
无止痛作用的物理治疗是:()A.超短波 B.激光 C.紫外线
下列药物不需后下的是A:薄荷B:钩藤C:生大黄D:熟地E:佩兰
Thechangeinthatvillagewasmiraculou
对郑和回国有利风向是( )。A.东北季风 B.西南季风 C.东南风
套利市价指令的优点和缺点分别是()。A.优点是成交速度快 B.优点是成交
根据我国《民法典》规定,保证担保的范围有()。A.主债权及其利息 B.违约金
(2021年真题)2×19和2×20年,甲公司通过多次交易以不同方式购买乙公司股
2020年6月1日,甲公司与乙公司签订购销合同,根据合同约定,甲公司在2020年
最新回复
(
0
)