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
38
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
Shaka______powerandbecamethekingoftheZulusuponthedeathofhisfather
[originaltext]IarrivedintheUnitedStatesonFebruary6,2006,butIrem
Bobsaidhewouldn′tgotothepartyas
A.发出功率4W B.发出功率16W C.吸收功率4W D.吸收功率16W
关于抗震设防烈度的高层剪力墙结构房屋采用短肢剪力端的说法,正确的是( )。A.
下列各组元素中,其性质的相似是由镧系收缩引起的是:
A.过氯酸钾 B.放射性I C.硫脲类衍生物 D.TSH(促甲状腺激素)
A,逆时针旋转,一个每次3格,一个每次2格
以下关于行政法基本原则的说法,哪些是正确的()A.行政法基本原则可以指导行
J公司是一家农产品加工、仓储、物流、销售企业。2011年,J公司有员工780人,
最新回复
(
0
)