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
2024-06-13
32
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
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://tihaiku.com/zcyy/3632305.html
相关试题推荐
【B1】[br]【B10】[originaltext]Thereissomethinghardtoresistaboutcherri
【B1】[br]【B8】[originaltext]Thereissomethinghardtoresistaboutcherrie
【B1】[br]【B7】[originaltext]Thereissomethinghardtoresistaboutcherrie
【B1】[br]【B6】[originaltext]Thereissomethinghardtoresistaboutcherrie
【B1】[br]【B4】[originaltext]Thereissomethinghardtoresistaboutcherrie
[originaltext]WhenMidoriwastwoyearsold,sheoftenclimbedontothepian
[originaltext]WhenMidoriwastwoyearsold,sheoftenclimbedontothepian
[originaltext]M:Didyounoticetheyjustbuiltanothercoffeehouseacrossthe
[originaltext]Botany,thestudyofplants,occupiesapeculiarpositionint
[originaltext]Botany,thestudyofplants,occupiesapeculiarpositionint
随机试题
FourDangerstotheEuroOperatingasinglecurrencyis
Manydinosaurswere(somuch)heavythatthey(spent)mostoftheirlivesinswa
"CollegeCampus"[img]2012q1/ct_etoefm_etoeflistz_1159_20121[/img][br]Whatdoe
Whatisaportcity?Asacenterofland-seaexcha
Whataretheytryingtodoattheverybeginningoftheconversation?[br][ori
患者,男性,45岁。有肝硬化史10年。大量呕血4小时。查体:表情淡漠,口渴明显,
深静脉血栓形成后可出现的致命并发症是A.肺栓塞 B.下肢动脉闭塞、缺血坏死
抵押是担保的一种方式,根据《物权法》,下列说法正确的是()。A.债权人不占有债
一般资料:求助者,男性,24岁,在读研究生。 案例介绍:求助者研究生入学后不久
某设备目前的实际价值为5500元,预计残值500元,第一年设备运行成本
最新回复
(
0
)