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
Unless we spend money to spot and stop asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some
Unless we spend money to spot and stop asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some
admin
2010-03-26
26
问题
Unless we spend money to spot and stop asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger 【B1】______ of the meteoroids (流星) that 【B2】______ across the night sky. Most orbit the sun far from Earth and don’t 【B3】______ us. But there are also thousands of asteroids whose orbits put them on a 【B4】______ course with Earth. Buy $ 50 million 【B5】______ of new telescopes right now. Then spend $10 million a year for the next 25 years to 【B6】______ most of the space rocks. By the time we 【B7】______ a fatal one, the scientists say, we’ll have a way to change its course. Some scientists favor 【B8】______ asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.
Is it worth it? 【B9】______ . Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. 【B10】______ . "If we don’t take care of these big asteroids, they’ll take care of us," says one scientist. "It’s that simple."
【B11】______ "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.
【B7】
选项
答案
spot
解析
转载请注明原文地址:https://kaotiyun.com/show/unk7777K
0
大学英语四级
相关试题推荐
A、Separatingthefire.B、Reducingtheheat.C、RemovingthefuelD、Cuttingofftheoxygen.DWhichmethodisoftenusedifwecove
A、Becausestudentsvaryinneeds.B、Becauseteachingmethodsvarygreatly.C、Becauseschoolsofferdifferentsubjects.D、Because
InWestVirginiaandinNewYork,oneoutoffourstudentsdropsoutofhighschool.InWashington,DC,the【S1】______areeven
A、Themanandwomanarestudents.B、Themanthoughtthespeechwasmoreinterestingthanthewomandid.C、Themanandwomanhave
Whymoreandmorepeoplebecameinterestedinbecomingcomputerprogrammers?Whatkindofqualityismostpreferredtobecomea
A、Areporter.B、Ateacher.C、Alibrarian.D、Anaccountant.D[听力原文]W:Howdoyoulikeyournewjob?M:Fine.ThisweekIhavebe
Bymeansofdreams,thehumansubconsciousissendingimportantmessagestotheconsciousmind.Tosomepeopleluciddreamingd
A、Hecannotattendherclass.B、Hewantstodeliversomethingtoheroffice.C、Hewantstoturninthereport.D、Hewantstofin
Unlesswespendmoneytospotandpreventasteroids,i.e.minorplanets,onemight【B1】______intoearthanddestroylifeaswekn
随机试题
除去含有Ca(HCO3)2的硬水的硬度,所加试剂为()。
A.红霉素B.克林霉素C.四环素D.克拉霉素E.罗红霉素临床上可取代林可霉素应用的是
特别行政区享有高度自治权。关于特别行政区的自治权下列哪些说法是正确的?()
按设计图示尺寸以钢材质量计算,不扣除孔眼、切边、切肢的质量,焊条、铆钉、螺栓等质量不另增加的金属结构工程有()。
长方形ABCD的面积是72平方厘米,E、F分别是CD、BC的中点,三角形AEF的面积是()平方厘米。
适应性障碍是人群中常见的一种心理障碍,一般是因环境改变、职务变迁或生活中某些不愉快的事件,加上患者的不良个性,而出现的一些情绪反应及生理功能障碍,并导致学习、工作、生活及交际能力的减退。根据上述定义,下列属于适应性障碍的是:
根据维果茨基的观点,心理机能由低级向高级发展的标志有()。(2013年)
选民名单应在选举日的()公布,实行凭选民证参加投票选举的,应当发给选民证。
LikethousandsofparentsacrossBritain,Ihavebeenscanningtheskieswithsomenervousnessthisweek.Mysonanddaughterar
A、Getuplate.B、Sleep8hoursaday.C、Exercisemore.D、Gotobedearlier.D短文最后给出了建议,如果睡得晚的人想要减掉几磅体重,他们可以比平时早点上床睡觉,这样做可以减少他们在睡
最新回复
(
0
)