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
61
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/7Cz7777K
0
大学英语六级
相关试题推荐
FourMinutesthatGetYouHiredBayStateralwayswantstobeateacher.Withthehelpoffriendswhoteachatschool,shel
TheWorldHealth【B1】______saysavianinfluenzacouldbecomeaworldwidethreatunlessgovernmentsactnowtostopit.Officials
Directions:Forthispart,youareallowed30minutestowriteashortessayentitledMyOpiniononCollegeGraduatesWorkingas
A、ReadingB、SheffieldC、ManchesterD、EgyptA
A、Fortyminutes.B、Twentyminutes.C、Eightyminutes.D、Seventyminutes.B
Advertisingisdistinguishedfromotherformsofcommunication__________________(因为广告商要为传递的广告信息付钱).
A、Tomakecoinslighter.B、Toconservesilver.C、Touseupsurpluscopper.D、Tomakecoinslastlonger.D细节推断题文中谈到用合金铸造硬币是为了确保它
Theplanet’swildcreaturesfaceanewthreat—fromyuppies(雅皮士),emptynestersandoneparentfamilies.Biologistsstudying
Lastweek,speakersataprograminWashingtondiscussedusingnanotechnology(纳米技术)toimprovehealthcareindevelopingcountr
Knowledgemaybeacquiredthroughconversation,watchingtelevisionortraveling,butthedeepestandmost【B1】______wayisthro
随机试题
使用VC6打开考生文件夹下的工程test23_3,此工程包含一个源程序文件test23_3.cpp,其中定义了类X和它的友元类Y,但它们的定义并不完整。请按要求完成下列操作,将程序补充完整。(1)将类X的静态数据成员y初始化为1。请在注释“//**
关于儿科疾病特点的描述,正确的是
高渗性脱水,其体液变化的最终表现是
A.敛肺滋肾B.开窍醒神C.除热止汗D.收湿生肌E.劫痰平喘五味子的功效
[2008年,第103题]图7.2-17所示电路中,电容的初始能量为0,设开关S在t=0时刻闭合,此后电路将发生过渡过程,那么决定该过渡过程的时间常数()。
背景资料某城市跨线桥工程,上部结构为现浇预应力混凝土连续梁,其中主跨跨径为30m并跨越一条宽20m河道;桥梁基础采用直径1.5m的钻孔桩,承台尺寸为12.0m×7.0m×2.5m(长×宽×高),承台顶标高为+7.0m,承台边缘距驳岸最近距离为1.
连日来,青海、浙江、陕西、江苏等9个省区市抓获了500余名造谣者,其中包括400余名“全能神”邪教人员。光山县的校园惨案,警方表示犯罪分子也是受了“世界末日说”的_________;虽然公众对此将信将疑,但是“世界末日”似乎还是有人相信的,至少是不信装信。
某林区村民小李为盖房欲去山上砍伐几棵国有树木。村长对他说,未经许可砍伐国有林木属于乱砍滥伐,是违反国家森林法规定的,于是小李听从了村长的劝导,放弃了去砍树的念头。该事例说明法有()功能。
HowtoReducePresentationStress1.CausesofpresentationstressFearofbeing【T1】【T1】______DoubtofyourownabilityFocusin
技术分析法是对市场以外影响市场价格的因素进行研究来预测市场价格变动方向的方法。()
最新回复
(
0
)