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] 【B2】
选项
答案
used up
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used up,意为“用尽”。
转载请注明原文地址:http://tihaiku.com/zcyy/2942025.html
相关试题推荐
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
[originaltext]SekouCoumbassaisadiplomatwhorepresentsoneofthenewA
[originaltext]M:IsthereaneedtocontrolpopulationonlyincountrieslikeI
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
IfthepopulationoftheEarthgoesonincreasingatitspresentrate,there
随机试题
OneofthoserarelocalcreationsofAmerica,cowboypoetryhasalongandv
[originaltext]Oneofthegreatjoysofgardeningistoshareagardenwith
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_023[/audioFiles]
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
用人单位与劳动者签订劳动合同期限三个月以上不满一年的,试用期不得超过()。A.
AA BB CC DD
干扰素抗病毒作用的特点是A:作用于受染细胞后,使细胞产生抗病毒蛋白 B:阻止病
畏食常由精神因素或喂养不当引起,那么一小儿11个月因畏食来院求医,护士应首先为其
黄芩、黄连、黄柏同用的方剂是( ) A.安宫牛黄丸 B.普济消毒饮 C.
基于欧式看涨期权和看跌期权平价关系的无风险套利策略中,公式左边值c+Ke-r(T
最新回复
(
0
)