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
A、Discovering new life in space. B、Studying meteorites. C、Plotting the courses of asteroids. D、Developing radar telescopes. C信息明
A、Discovering new life in space. B、Studying meteorites. C、Plotting the courses of asteroids. D、Developing radar telescopes. C信息明
admin
2010-09-25
59
问题
M: Hello. This is Greg Rice reporting live in Barrow, Alaska.
W: Hello, Greg. Is everything going smoothly?
M: Yes. I’ve just arrived here in Barrow, Alaska, to bring you live coverage of what appears to be the results of a huge meteorite impact, perhaps the largest in recent history, that occurred just twelve hours ago. The exact location of the impact is unknown, but estimates put it about 20 kilometers south of Barrow based on shock waves felt throughout the region.
W: Are there any witnesses?
M: Yeah. Some witnesses say they saw a bright light streaking through the sky, accompanied by a roaring boom, moments before the impact. It’s unknown whether there are any casualties, but it is unlikely considering this sparsely populated area.
W: It’s said that such impacts were commonplace during the formation of our solar system, and many believe that a meteorite 10 kilometers in diameter which crashed into Earth 65 million years ago led to the mass extinction of many animal species including the dinosaurs.
M: You’re right. But it is often difficult to calculate the number of such large impacts on Earth because erosion and vegetation make it difficult to spot them. In recent years, astronomers have focused more of their attention on the paths of many uncharted space rocks or asteroids floating out there in the hope that we might be able to determine the threat they pose on mankind...This is Greg Rice reporting from Alaska.
W: Thanks, Greg...We’ll keep you up-to-date on any development there.
选项
A、Discovering new life in space.
B、Studying meteorites.
C、Plotting the courses of asteroids.
D、Developing radar telescopes.
答案
C
解析
信息明示题。男士最后说,近年来,天文学家更多地关注许多未知太空岩石或小行星的移动轨道,以希望可以判断出它们对人类造成的威胁,由此可知,天文学家近期工作的重点在于测定小行星的运行轨迹,故选C。
转载请注明原文地址:https://kaotiyun.com/show/cfz7777K
0
大学英语六级
相关试题推荐
A、Theman.B、Thewoman.C、Theman’sboss.D、Himself.D
Theplanet’swildcreaturesfaceanewthreat—fromyuppies(雅皮士),emptynestersandoneparentfamilies.Biologistsstudying
Althoughthefactthattodayvirusesareknownto【S1】______causecancerinanimalsandincertainplants,tha
Thepriceofbeer______(从50美分到4美元不等)perliterduringthesummerseason.
A、1.3seconds.B、Eightminutes.C、Alife’stime.D、Aboutfouryears.D事实细节题原文中讲到距离地球最近的恒星离地球大约是四光年。
A、Waitforaboutthreeminutes.B、Trydialingthenumberagain.C、Callagainsometimelater.D、MakeanappointmentwithDr.Che
A、Themanislookingforanewjob.B、Themanissufferingfromhisbrokenleg.C、Themanisinshortofmoney.D、Themanhasan
A、Themanpreferstohavesomethinglight.B、ThewomanpreferstohavesomethinglightC、Themanishavingastomachache.D、The
A、Stayingmentallyhealthy.B、Takingpartinmoresocialactivities.C、Gainingmoreknowledgeaboutsociety.D、Havingmoreconta
A、Pants.B、Asuit.C、Acoat.D、Ablouse.D选项都和服装有关。从Ineedtogettheblousethatgoeswithmypantssuit.可以得知女士要买blouse。
随机试题
根据《建设工程安全生产管理条例》,建设工程施工前,()负责项目管理的技术人员应当对有关安全施工的技术要求向施工作业班组、作业人员作出详细说明,并由双方签字确认。
A.天然牙列中一些牙的牙冠宽度存在明显的相关性B.牙弓应有长度和牙弓现有长度C.牙齿大小的协调性D.牙冠宽度与牙弓宽度之间存在一定的比例关系E.牙冠存在外形高点牙弓拥挤度分析必须建立在这两个指标上
某分部工程双代号时标网络计划如下图所示,其中工作A的总时差和自由时差()天。
1.背景某通信运营商计划在某地建设3G试验网,工程由只有设备入网资质的3G设备生产厂商编制了初步设计,工程估算价在280万元,此初步设计经研究得到批准。该运营商决定采用包工不包料的形式将此项目承包给一家长期合作的施工单位,并请施工单位选定基站的站
下列各项中,反映企业对短期债务偿付能力的是()。
工程量清单由()等组成。
总需求是指在其他条件不变的情况下,在某一给定的价格水平上,一个国家或地区各种经济主体愿意购买的产品总量。下列关于影响总需求的因素表述错误的有()。
农业科技人员向农民建议,在利用温室生产时,可向温室里施放适量的二氧化碳(CO2),这是因为CO2可灭火,施用CO2可避免火灾。()
下列句子中有歧义的一句是( )。
元代地方官吏自行编制的一部法律汇编是()
最新回复
(
0
)