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. CWha
A、Discovering new life in space. B、Studying meteorites. C、Plotting the courses of asteroids. D、Developing radar telescopes. CWha
admin
2012-11-30
62
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
What is the focus of the astronomers’ recent work?
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/Dqb7777K
0
大学英语六级
相关试题推荐
Thelocalpeoplewerejoyfullysurprisedtofindthepriceofvegetablesnolongeraccordingtotheweather.
Theschoolemphasizesitsintentiontoprovidehigh-qualitytrainingwhichenablesstudentstoachievetheirfullpotentialint
Intermsofeconomics,whenbusinessis_______thereisusuallyanincreaseinunemployment.
Whenhewasastudent,hisfathergavehimamonthly______towardshisexpenses.
Psychologistshavefoundthat______disciplinarymeasuresdonotalwaysmakeachildbetterbehave.
Despite______economicforecasts,enterprisesarepredictedtoincreasespendingonIT.
Shefrownedandstampedherfeetto_______anger.Thelivelyperformancegainedhighpraiseofthejudges.
A、Attendtheorientation.B、Rescheduleameeting.C、Meetwithacustomer.D、Trainthenewsalesstaff.A男士问女士能不能参加新员工的情况介绍会,女士说她
A、Warmerwatertemperatures.B、Lessaquaticlife.C、Ariseinoceanlevel.D、Colderwinds.C由对话末尾男士提到iftheicecap…melts,thele
A、Migratingbirdsfollowacertainsmellorscent.B、Animalsmigratebyfollowingchangesintemperature.C、Animalsfindtheirw
随机试题
L为抛物线y=x2上从点(0,0)到点(1,1)的一段弧,则=()。
可用于心力衰竭治疗的β受体阻滞剂为
可在4℃生长进行冷增菌的是A.产单核细胞李斯特菌B.不动杆菌C.金黄色葡萄球菌D.肺炎链球菌E.流感嗜血杆菌
患者,男,34岁。工人,右指头肿胀疼痛7天,呈蛇头状肿,皮色嫩红,疼痛剧烈,手指下垂时加重,伴恶寒发热头痛,透光试验见指头腹侧有一豆状黑色点。诊断为蛇头疔,外治宜
在脂肪动员中,脂肪分解的限速酶是
女,70岁。干咳10余天入院,无发热、咯血及呼吸困难。查体:心肺未见异常,双手可见杵状指。胸部X线片示左下肺可见直径约2.6cm的类圆形阴影,其内可见小空洞,边缘不规则。该患者需要的治疗为
(2013年真题改编)长管并联管道各并联管段的()。
在潜在生产能力没有被充分挖掘以前,不会出现需求拉动的通货膨胀。()
一、注意事项本题由给定资料与作答要求两部分构成。二、给定资料1.2012年1月9日,教育部政策法规司司长孙霄兵表示,2012年要推动所有高校全面启动章程制定或修订工作,“高校的举办者、主管教育行政部门应按照政校分开、管办分离的原则,以章程明确
青年期自我意识修正的主要依据是()
最新回复
(
0
)