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
2015-06-07
46
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 【B2】______continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the【B3】______conditions on Earth will make it necessary for us to look for open space somewhere else.
An American scientist, Professor Carl Sagan, believes that before the earth’s resources are completely【B4】______,it will be possible to change the atmosphere of Venus and so create a new world almost as large as Earth itself. The difficulty is that Venus is much hotter than the Earth and there is only a tiny amount of water there.
Sagan【B5】______that algae (藻类),organism that can live in【B6】______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 fairly short time, the algae will【B8】______the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler but before man can set foot on Venus, it will be necessary for the oxygen to produce rain. The【B9】______of the planet will still be too hot for men to【B10】______it but the rain will eventually fall and in a few years something like Earth will be reproduced on Venus.
【B2】
选项
答案
trends
解析
短文谈论的是人口增长的状况,trend的意思是“趋势”,即人口增长的这种趋势。
转载请注明原文地址:https://jikaoti.com/ti/9y6FFFFM
0
大学英语六级
相关试题推荐
A、Becauseitislesslikelytorunaway.B、Becauseitislesslikelytobetooshywithotherdogs.C、Becauseit’seasierforit
Forthispart,youareallowed30minutestowriteashortessayentitledTheImportanceofInformationSecurity.Youshouldwri
A、Thematerialsforindoorplumbinghavebeenimproved.B、Thehousesrecentlybuiltaremuchmoresolid.C、Peoplewon’tgoanywh
StatesExperimentwithOut-of-ClassroomLearning[A]AttheendofAugust,mostofOhio’steenagerswillshakeofftheirsummerti
StatesExperimentwithOut-of-ClassroomLearning[A]AttheendofAugust,mostofOhio’steenagerswillshakeofftheirsummerti
Jointhe"SleepChallenge"[A]Didyougetenoughsleeplastnight?Probablynot."Weareanationofsleep-deprivedwomen,"says
A、Hewillbuyanothercellphone.B、Hewillcomplainagainiftheproblemisn’tsettled.C、Hewillaskforarefundiftheprobl
A、Therewasmuchmoredisorder.B、Theelectricitysupplyfailed.C、Itwasquiteunexpected.D、Itcameinthecoolautumn.A
EveryoneremembersthewhitewashingsceneinTheAdventuresofTomSawyer.Buthowmanyrecallthescenethatprecedesit?Havin
A、Heisastudentwhowantsapart-timejob.B、Hewantstobuyahousenearhiscompany.C、Hecan’taffordhispresenthouse.D、
随机试题
X线从被检者的后侧射向前侧的投射方向为
按分数系统分类,属于非均相制剂的有()
(1)质检机构依照本方法发放等级证书,并且不允许以任何名义收取工本费。(2)等级证书遗失或者污损的,可以向原发证质检机构申请补发。上述说法正确的是()。
( )有助于确定一个特定企业或特定的建设工程可能遭受哪些损失,以及在何种情况下遭受这种损失。
封闭式基金绝对不可能进行扩募,因此其基金份额固定不变。()
现有一房地产开发项目,其占地面积为2000平方米,容积率为2.5,楼面地价为1500元/平方米,建造费用为3000元/平方米;预计项目建成后,建筑物可出租面积系数为0.75,初步确定项目的租金水平为230元/平方米·月(可出租面积),出租费用为毛租金收入的
个体根据任务的要求把注意从一个对象指向并集中到另一个对象上,称为注意()。
()是美术课程评价的依据。
我国颁布且实行的第一个学制是()。
Whatdidthemanwininhisdream?
最新回复
(
0
)