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
72
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.
【B4】
选项
答案
exhausted
解析
根据空格前的系动词are,推断此处用过去分词表被动。注意exhaust“耗尽”不要漏掉字母h。
转载请注明原文地址:https://kaotiyun.com/show/cGQ7777K
0
大学英语六级
相关试题推荐
A、Becauseitislesslikelytorunaway.B、Becauseitislesslikelytobetooshywithotherdogs.C、Becauseit’seasierforit
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
WhyWeNeedGoodTeachers[A]TherelativedeclineofAmericaneducationattheelementary-andhigh-schoollevelshaslongbeen
A、Stayinginbed.B、Stayingoffthetelephone.C、Switchingoffthelights.D、Takingashower.B短文提到,如果闪电时你在家里,请远离电话。选B。
InancienttimestheChinesefarmedforaliving,andalwayslivedontheland【B1】______theirancestorsandnevermovedwithout
StatesExperimentwithOut-of-ClassroomLearning[A]AttheendofAugust,mostofOhio’steenagerswillshakeofftheirsummerti
A、Therestaurantwasn’tcrowded.B、Themealwasveryexpensive.C、Themagazinewasn’tinteresting.D、Thefoodwasn’tverygood.
A、Putonmoreclothes.B、Leaveherofficeearly.C、Getmorephysicalexercises.D、Gohomeonfoot.D
A、Thedensityofsomegraymatterincreased.B、Thedensityofsomegraymatterdecreased.C、Theareaofthegraymatterbecameb
AccordingtoapapertobepublishedinPsychologicalSciencethishasaninterestingpsychologicaleffect.Agroupofresearche
随机试题
SLE患者最易受累的脏器是
《执业兽医管理办法》适用于在中华人民共和国境内从事()活动的兽医人员
工程建设国家标准的制定程序主要包括以下几个阶段()。
某企业进行人力资源需求与供给预测。经过调查研究与分析,确认本企业的销售额(万元)和所需销售人员数量(人)成一元线性正相关关系,并根据过去10年的统计资料建立了一元线性回归预测模型Y=a+bX,其中:X代表销售额,Y代表销售人数,回归系数a=52,b=0.0
立法、行政、司法的“三权分立”思想是由()提出的。
一副对联的上下联之间,内容应当相关,____________上下联各写一个不相关的事物,两者不能照映、贯通、呼应,____________不能算一副合格的对联,____________不能算作对联。依次填入画横线部分最恰当的一项是()。
在考生文件夹下完成如下简单应用:(1)建立一个满足下列要求的表单文件tab。①表单中包含一个页框控件Pageframel,该页框含有3个页面:Pagel、Page2、Page3,三个页面的标题依次为“学生”、“课程”和“成绩”。
有如下程序:#includeusingnamespacestd;intmain(){intsum=0;for(inti=0;i
ThehistoryofresponsestotheworkoftheartistSandroBotticelli(1444-1510)suggeststhatwidespreadappreciationbycritic
Losingajobornotbeingabletofindonealmostalwaysbringsunwelcomechanges.Ifyou’velostajob,thefirstfeelingisof
最新回复
(
0
)