首页
登录
职称英语
[originaltext]M: Doctor Cole, thank you for agreeing to this interview for the
[originaltext]M: Doctor Cole, thank you for agreeing to this interview for the
游客
2023-09-17
72
管理
问题
M: Doctor Cole, thank you for agreeing to this interview for the Daily Campus News. Can you tell us about what you and your colleagues discussed at the annual astronomy society meeting last month?
W: Yes. For the first time ever, the scientific community has established the existence of planet outside our own solar system. Of course, we knew that certain distant stars existed, but only recently did we learn that several of them are orbited by their own planets.
M: Why did it take so long to locate those planets?
W: Well, you have to understand, that they are a billion times dimmer than their parent stars. We don’t currently have a telescope that can be used to see them.
M: But if the astronomers didn’t see the planets, through a telescope, how did they find them?
W: By a very indirect method. Umm, the astronomers measured subtle distortions in the frequency of the light from the parent stars and observed that some of the stars seem to rock back and forth. They determined that this is caused by the gravitational pull from orbiting planets.
M: There is a powerful new telescope being built in Arizona. Will that help them see these planets?
W: They should be able to see them at least in the form of small spots of light. And then the scientists would be able to break down and analyze this light. By doing this, they hope to learn about the chemical composition of these planets. Oxygen and ozone molecules, for example, would be the signs of life on these planets.
M: I’m looking forward to heating more when the telescope is in operation and I’m sure our readers would be interested too.
选项
A、They studied variations in the appearance of the parent stars.
B、They were able to see the planets with a telescope.
C、They compared the parent stars to the Sun.
D、They sent astronauts on a mission into space.
答案
A
解析
How did scientists establish the existence of the planets?
转载请注明原文地址:https://www.tihaiku.com/zcyy/3022227.html
相关试题推荐
[originaltext]M:Amy,whatwasyourfirstjob?W:Well,whenIgraduatedfromt
[originaltext]W:Goodmorning,sir.Areyoubeingattendedto?M:I’mlooking
[originaltext]M:Whereareyougoingonvacationthissummer?W:Aniceplace
[originaltext]M:WheninRome,doastheRomansdo,theysay.W:WhatdotheRo
[originaltext]M:WheninRome,doastheRomansdo,theysay.W:WhatdotheRo
[originaltext]W:Whendidyoubecomeinterestedincollectingstamps?M:Oh,wh
[originaltext]W:Whendidyoubecomeinterestedincollectingstamps?M:Oh,wh
[originaltext]M:I’dliketoopenasavingsaccount,please.W:Allright,ple
[originaltext]M:I’dliketoopenasavingsaccount,please.W:Allright,ple
[originaltext]M:I’dliketoopenasavingsaccount,please.W:Allright,ple
随机试题
Wemightmarvelattheprogressmadeineveryfieldofstudy,butthemethod
[originaltext]Readingtooneselfisamodernactivitywhichwasalmostunk
HowtoCureJetLagA)Jetlagisexhausting,disorientat
[originaltext]W:Dr.Smith.IneedtoaskyouaboutsomethinginChapter12.We
女性,15岁,周期性下腹部疼痛伴排尿困难;月经未来潮;超声检查如图所示,最可能的
水平放置的平行金属板A、B连接一恒定电压,两个电荷M和N同时从极板A的边缘和两极
某医院对恢复中病情轻微的患者,为保证其睡眠质量,夜间查房采用窗口查看方式,A患者
A、u2(t)出现频率失真 B、u2(t)的有效值U2=AU1 C、u2(t
一般地讲,评价教师一堂课优秀与否的标准有()。 A.教学目的的明确性 B.教
张某因超速驾驶发生交通事故,不慎将行人A撞成重伤,且把B停放在路边的摩托车撞毁了
最新回复
(
0
)