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
13
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] 【B1】
选项
答案
sustain
解析
根据空格前的to可知,空格处应填入动词(词组)。结合录音可填入sustain,意为“维持”。
转载请注明原文地址:https://tihaiku.com/zcyy/3558288.html
相关试题推荐
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
随机试题
VisitorstoSt.PaulCathedralaresometimesastonishedastheywalkround
WhichofthefollowingstatementsisCORRECTaboutShaheen?[br][originaltext]
使用()灭火器灭火时,手一定要握在喷筒木柄处,接触喷筒或金属管要戴防护手套,以
患者,男性,72岁。脑血管疾病,医嘱静脉输液,输入血栓通,输液时发生静脉痉挛致滴
小檗碱降血糖作用的特点为A.促进胰岛素的释放B.对自发性糖尿病KK小鼠无明显作用
留守儿童小张因参与社会盗窃而被公安机关查获,因其未满16岁,犯罪情节又不严重.所
常见的品牌策略包括()。A:产品线扩展策略B:品牌延伸策略C:单品牌策略D
有关委付的说法正确的是:() A.委付以实际全损为条件 B.委付可仅就部分
监理工程师对屋面卷材防水进行了检查,发现屋面女儿墙墙根处等部位的防水做法存在问题
露天台阶爆破的常见炸药装填结构有()。A.连续装药 B.耦合装药 C.间隔装
最新回复
(
0
)