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
67
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.
【B9】
选项
答案
surface
解析
空格前有定冠词The,可知这里需要一个名词。surface的意思是“表面”。
转载请注明原文地址:https://kaotiyun.com/show/uGQ7777K
0
大学英语六级
相关试题推荐
Thousandsofstudents,facultyandstaffboycottedclassesandstagedralliesacrossthe10-campusUniversityofCalifornia(UC)o
Americansusuallyconsiderthemselvesafriendlypeople.Theirfriendships,however,tendtobeshorterandmore【B1】______thanf
A、Themanshouldbepatient.B、Themanismistaken.C、Shemissesherfriend.D、Sheiswaitingforacall.B男士祝贺女士找到了一份新工作,女士说“你一
A、Fantasticsettings.B、Specialeffects.C、Mysteriouscostumes.D、Thethemesong.B男士说,特技是这部电影能够取得成功的主要原因。故选B。
A、Takerupherfirstjobatschool.B、Spendhersummerholiday.C、StudyforherMaster’sdegree.D、Studyasanexchangestudent.
A、Itwillhavemoreearthquakes.B、Itisbecominglargerslowly.C、Itisdividedbyalargeplate.D、Itwillbecomeevendeeper.
LivingwithParentsafterGraduationDirections:Forthispart,youareallowed30minutestowriteashortessayentitledLivin
A、Theywoulddemandasatisfactorypay.B、Theywoulddemandniceworkingconditions.C、Theywouldthinkshorterworkinghoursle
A、Excessiveheatmadepeopleturnonmanyelectricalappliances.B、Somemachinesweren’tworkingduetotheunemployment.C、Ligh
EveryoneremembersthewhitewashingsceneinTheAdventuresofTomSawyer.Buthowmanyrecallthescenethatprecedesit?Havin
随机试题
简述汽油机电控燃油喷射系统(EFI)的工作原理。
抽样误差指的是
甲有天然奇石一块,不慎丢失。乙误以为无主物捡回家,配以基座,陈列于客厅。乙的朋友丙十分喜欢,乙遂以之相赠。后甲发现,向丙追索。下列选项哪一个是正确的?()
法院对于诉讼中有关情况的处理,下列哪些做法是正确的?()
投标报价应考虑风险费,下列说法正确的是( )。
发行人向单个客户的销售比例(),应披露其名称及销售比例。
下列有关持有待售的非流动资产和处置组的说法,正确的有()。
某企业生产D产品,设计生产能力为50000件,计划生产40000件,预计单位产品的变动成本为1000元,计划期的固定成本费用总额为8000000元,该产品适用的消费税税率为5%,成本利润率必须达到30%。假定本年度接到一额外订单,订购10000件D产品,单
我国在与世界各国和地区发展对外经济关系、扩大对外贸易、吸收和利用外资、发展对外技术交流时,必须坚持的一个共同原则是()。
可能性是指
最新回复
(
0
)