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] 【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
Hemovedawayfromhisparents,andmissedthem______enjoytheexcitinglifein
Nextfall,whenyouseegeeseheadingsouthforthewinter,flyingalongin
Manycountrieswillnotallowcigaretteadvertisingintheirnewspaperoron
A.actionB.butC.distractedD.absurdE.analogiesF.pullG.copyH.
Forcenturiesmendreamedofachievingverticalflight.In400A.(D),Chines
鼻唇沟消失是面神经颅外段的分支中哪一支损伤() A.下颌支 B.
家庭债务管理状况的分析是指对客户进行家庭债务管理,并提供相关专业建议的基础和前提
路面施工的中型水泥混凝土搅拌设备主要用于()现场使用。A.中、小型建筑工程
胃、十二指肠溃疡急性穿孔最可靠的诊断依据是A.上腹部刀割样剧痛 B.X线检查可
下列建设工程担保中,由业主方(招标人)提交担保的有()。A.履约担保 B.预
最新回复
(
0
)