首页
登录
职称英语
[originaltext]M: Hello. This is Greg Rice reporting live in Barrow, Alaska.W:
[originaltext]M: Hello. This is Greg Rice reporting live in Barrow, Alaska.W:
游客
2023-09-09
66
管理
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://tihaiku.com/zcyy/2998911.html
相关试题推荐
[originaltext]Humanbeingshaveusedtoolsforaverylongtime.Insomepa
[originaltext]Humanbeingshaveusedtoolsforaverylongtime.Insomepa
[originaltext]W:Hi,John.M:Oh!Hi,Laura.Whatareyoudoinghere?W:Uh.I’
[originaltext]W:Hi,John.M:Oh!Hi,Laura.Whatareyoudoinghere?W:Uh.I’
[originaltext]Ifwomenaremercilesslyexploitedyearafteryear,theyhave
[originaltext]InMr.Allen’shighschoolclass,allthestudentshaveto"g
[originaltext]InMr.Allen’shighschoolclass,allthestudentshaveto"g
[originaltext]M:Howwasyourweekend?W:Itwasawful.M:Awful?Really?ButI
[originaltext]W:IthoughttherewasstilltimeformetocatchthetraintoNe
[originaltext]W:IthoughttherewasstilltimeformetocatchthetraintoNe
随机试题
Withhumanfootprintsonthemoon,radiotelescopeslisteningformessagesf
Howmuchdomanysub-Saharancountriesspendondrugsperpersonperyear?[br]
下列属于碳酸钙结晶的是A.钟乳体 B.针晶 C.砂晶 D.菊糖
秘书工作的基本原则,是指秘书人员在工作中必须遵循的规范和准则,主要包括()。A
检测血管的血流是高阻力还是低阻力,可应用频谱多普勒测量A.平均血流速度(Vm)
体内合成胆固醇的直接原料是()。A.α-酮戊二酸 B.丙酮酸 C.乙
土工织物撕裂强度表示沿土工织物某一裂口将裂口逐步扩大过程中的最大(),单位为N
可引起高密度脂蛋白升高的是A.糖尿病 B.代谢综合征 C.吸烟 D.饮酒
下列会计要素中,()属于静态会计要素。A.资产 B.收入 C.费用
共用题干 李某,女性,72岁。因急性胆囊炎急诊行胆囊切除术,采用经右上腹腹直肌
最新回复
(
0
)