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
2024-04-16
26
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/3558296.html
相关试题推荐
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
随机试题
TheancientAztecsveneratedthecacaotreeanduseditsbeansasaformof
我国近代的三大民营出版机构不包括( )。A.商务印书馆 B.开明书店 C.
B
长为8宽为5的长方形内有一内接阴影四边形(如图所示),则阴影四边形的面积是(
下列选项中,属于拜占庭式建筑典型特征的是()。A.穹顶 B.尖顶 C.歇
关于常用的国外药典叙述错误的是A.美国药典简称USP,现行版为第31版(2008
共用题干 患者女性,50岁,因右上腹痛、发热、黄疸入院。患者就诊6小时后出现高
一般认为,1868年英国成立的“海外及殖民地政府信托基金”是世界上最早的证券投资
治疗高热抽搐、小儿急惊、带状疱疹,宜选用的药物是A.黄芩 B.黄连 C.黄柏
陕西某高校一位副教授因高热住进职工医院。经B超、CT、胃检、抽血、抽骨髓化验等检
最新回复
(
0
)