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
59
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] 【B4】
选项
答案
solar system
解析
根据空格前的our可知,空格处应填入名词(词组)。结合录音可填入solar system,意为“太阳系”。
转载请注明原文地址:http://tihaiku.com/zcyy/2942027.html
相关试题推荐
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
Inrecentyears,wehaveallwatchedtheincreasingcommercializationofthe
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
[originaltext]Theadvantagesanddisadvantagesofalargepopulationhavel
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
U.S.collegestudentsareincreasinglyburdenedwithcreditcarddebt,accor
Karaokemayneverbethesame,thankstoresearchbeingpresentedinNashvil
随机试题
[originaltext]M:Hi,Kate.W:Hi,Peter.Howhaveyoubeen?M:Oh,OK,Iguess.
Thenursewasarrestedbecausepolicebelievedthat[br][originaltext]Anu
下列各组词语中,注音全部正确的是( )。 A.A B.B C.C D.
根据《大型群众性活动安全管理条例》,下列说法错误的是()。A.对经安全许可
当拟建工程有重量大于40t的设备安装时,其专业工程措施项目清单可列项( )。A.
对蛛网膜下腔阻滞麻醉(腰麻)术后并发低压性头痛的处理,下列哪项是不恰当的A.去枕
()是指某些行业出现产业结构调整或原材料价格上升或竞争加剧等不利变化时,贷款组合
提示:本题为选作题,分甲、乙两题。请选择一题作答;答题时请务必标明甲题或乙题;甲
《中华人民共和国执业医师法》第二十二条规定的医师的法律义务同时也是其基本的道德义
二次回路中自动开关瞬时脱扣器断开短路电流的时间应不大于()。 A.20ms;
最新回复
(
0
)