首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to【B1】
If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to【B1】
admin
2016-03-29
58
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.
【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:https://kaotiyun.com/show/VGL7777K
0
大学英语六级
相关试题推荐
VideogameshavebecomeincreasinglypopularinbotharcadesandtheaverageAmericanhome.Peopleofallagesandfromallwalk
A、Byinformingpeoplethatit’sanincurabledisease.B、Byprovidingeffectivemedicinetostopitstransmission.C、Bydisciplin
Itisimpossibletodescribeinsomnia(失眠)topeoplewhoaresoundsleepers.Thesearethepeoplewhotrustthatgettinginbedwi
A、Hecan’tcatchupwithhisclassmates.B、HefindstheEnglishcourseloadtooheavy.C、Heisnotinterestedinhispresentmaj
WhenMomandDadGrowOld[A]Theprospectoftalkingtoincreasinglyfragileparentsabouttheirfuturecanbe"oneofthemost
Dowhochoosetogoonexotic,far-flungholidaysdeservefreehealthadvicebeforetheytravel?Andeveniftheypay,whoensur
TheConservativegovernmentwillfacedifficultyprovingthatitsplantoautomaticallyenrolleligibleCanadiansintheOldAge
Thekeyelementtosuccessfulinterviewingisnotyourexperience,yourgrades,whatclassesyoutook,yourextracurricular(课外的)
随机试题
Johndarenotgotothenightclub,_______?()
心电图检查时红色导联线应连接在
牙隐裂的临床表现之一是
油罐按结构形式的不同可划分为()。
下列关于会计主体的说法中,正确的有()。
关于员工福利制度的说法,正确的有()。
函数的值域为().
据一项统计显示,在婚后的13年中,妇女的体重平均增加了15公斤,男子的体重平均增加了12公斤。因此,结婚是人变得肥胖的重要原因。为了对上述论证作出评价,回答以下哪个问题最为重要?
WaltDisneyCo.’spresidentsaidWednesdayofadealbetweenitand【S1】______PixarAnimationStudioswhichisn’
Themeritofasalestaxisthatitdecreasesgovernmentrelianceonincometaxes.
最新回复
(
0
)