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
53
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://kaotiyun.com/show/vGQ7777K
0
大学英语六级
相关试题推荐
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
A、Shethinksthemanshoulddrivetotown.B、Shewantscarstopassbythehighway.C、Themanshouldmindhisownbusiness.D、Th
WhyWeNeedGoodTeachers[A]TherelativedeclineofAmericaneducationattheelementary-andhigh-schoollevelshaslongbeen
A、Law.B、Music.C、Geology.D、Biology.B男士开头说女士申请的是地理学专业,因为由音乐专业转向地理不同寻常,所以男士建议女士要在她专业的特殊性方面予以说明。故可知女士大学本科时期学的是音乐专业,选B。
Somethingveryunusualhappenedabout80,000yearsago,asEarth’slasticeagewasgettingstarted.Sealevelsthathadbeendr
InancienttimestheChinesefarmedforaliving,andalwayslivedontheland【B1】______theirancestorsandnevermovedwithout
Apioneeringheadteacheriscallingforallsecondaryschoolstofollowhisleadandstartclassesat11am,allowingteenagers
A、Itshowsthecomponentsofeachcigarette.B、Itwarnsusthatsmokingisdangeroustohealth.C、Ittellspeoplethesideeffec
A、Theuniversityregardschemistryasunimportant.B、TheChemistrydepartmentisunder-funded.C、Thereisnotenoughspaceinth
A、Becheerfulevenwhenyouareprovoked.B、Neverseemtobenervous.C、Trytowindebatingpoints.D、Neversay"Idon’tknow."
随机试题
A.金黄色葡萄球菌B.粪链球菌C.白色念珠菌D.变形杆菌E.类杆菌引起阑尾脓肿的常见厌氧菌是
下列生物碱中易溶于水的结构类型有()
A.中、老年女性B.儿童C.青壮年D.老年人E.中年男性肱骨髁上骨折多见于()
进口商在签订进口动物、动物产品的外贸合同时应注意的问题有:( )
“三公”原则不包括( )。
根据代理法律制度的规定,下列情形中,法定代理终止的有()。
关于行政法规的各项表述中,正确的是()。
文案与图像是广告作品的两大元素,文字与图像配合是否默契也是广告作品是否成功的重要指标。下列关于文案与图像的说法错误的是()。
Everykidmaycomplainaboutschoolnowandthen,butonlyaemailpercentageofkidsareunwillingtogotoschool.Ifachild
A、StudyingforadegreeinFrench.B、Workingasasecretary.C、Takingmanagementcourses.D、TeachingEnglishatauniversity.B
最新回复
(
0
)