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
考研
Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say so
Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say so
admin
2021-04-29
26
问题
Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists.
Asteroids are bigger versions of the meteoroids (流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands whose orbits put them on a collision course with Earth.
Buy $40 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are:1) How likely the event is; 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 400,000 years. Sounds pretty rare—but if one did fall, it would be the end of the world. "If we don’t take care of these big asteroids, they’ll take care of us, " says one scientist. "It’s that simple. "
The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? "The world has less to fear from doomsday (毁灭性的) rocks than from a great nuclear fleet set against them, " said a New York Times article.
What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
选项
A、It sounds practical but it may not solve the problem.
B、It may create more problems than it might solve.
C、It is a waste of money because a collision of asteroids with Earth is very unlikely.
D、Further research should be done before it is proved applicable.
答案
B
解析
根据文章最后一段可知正确答案为B。
转载请注明原文地址:https://kaotiyun.com/show/jyGi777K
0
在职申硕(同等学力)英语
相关试题推荐
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonalrelationships.Onestrengthof
Sincewearesocialbeings,thequalityofourlivesdependsinlargemeasureonourinterpersonalrelationships.Onestrengthof
A.Don’tleavetheaudienceout.B.Makeitsimpletounderstand.C.Bepreparedandpractice.D.Complementyourspeechwithvisual
Unlesswespendmoneytospotandpreventasteroids(小行星)now,onemightcrashintoEarthanddestroylifeasweknowit,saysome
Inbringingupchildren,everyparentwatcheseagerlythechild’sacquisition(学会)ofeachnewskill—thefirstspokenwords,the
Newtechnologylinkstheworldasneverbefore.Ourplanethasshrunk.It’snowa"globalvillage"wherecountriesareonlysecond
Dogsaresocialanimalsandwithoutpropertraining,theywillbehavelikewildanimals.Theywillspoilyourhouse,destroyyour
A.It’sreallyfamilyfirstB.therealworkwillstartwhentheywalkoffthestageC.thenitwasjustapenaltyD.becauseI’ma
Competitionbreedsexcellence.Askanyonewhopaysattentiontothecarindustryandtheywilltellyouthatthefamily-sedanseg
A.Theintroductionofpredators.B.Preventingthekiwidecline.C.Reasonsforconcern.D.Explanationforlargerbirdpopulat
随机试题
设矩阵A=的特征值为1,2,3,则数x=______.
A.人参保肺丸B.苏子降气丸C.蛤蚧定喘胶囊D.七味都气丸E.固本咳喘片治疗上盛下虚,气逆痰壅所致咳嗽喘息的药是()。
对子宫收缩乏力引起的产后出血,首要的处理措施是
针对热轧圆盘条、热轧光圆钢筋、热轧带肋钢筋和余热处理钢筋的质量评定方法,以下()项目中,当有一个项目不合格时,取双倍数量对该项目复检,当仍有1根不合格时,则该批钢筋应判为不合格。
棉纺企业A企业为增值税一般纳税人,1月份发生下列业务:(1)购进纺织设备一台,不含税价款10万元,取得增值税专用发票,另支付运费500元,取得承运部门开具的运输发票;(2)从当地农民生产者购进免税棉花10吨,每吨1.4万元,收购凭证上注明价款1
承购包销方式是由发行人和承销商签订承购包销合同,合同中的有关条款是通过双方协商确定的。( )
()对于编辑相当于工厂对于()
Theshoptheyenteredwas______.Accordingtothepassage,thewritermightbe______.
Howmuchshouldthemanpay?
TheImportanceofTimeI.Introduction1)theissuesof【T1】【T1】______—notinanyone’shands—happeningeverytimeandwithever
最新回复
(
0
)