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
52
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:http://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
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchang
【教学过程】 环节一:导入新课 视频导入:课件播放关于伊拉克战争的视频和CCTV-1关于“伊朗核问题”的报道。 教师引导提问:录像所报道的是什么事件
细粒土的成分代号为()。A.Ba B.Cb C.F D.SI
患儿,4岁,10月15日开始发热,伴头痛、恶心、呕吐1次,腹泻5次,精神不振,抽
在20℃以上才能熏蒸药材的是A.硫磺熏蒸法B.氯化苦熏蒸法C.磷化铝熏蒸法D.过
共用题干 TheWriting'sontheWall?Isitar
共用题干 1.Doyouknowachildwhosurvive
A.一次常用量 B.3日常用量 C.7日常用量 D.15日常用量为门诊癌症
下列有关上市公司收购人义务的表述中,正确的有()。A.要约收购期间,收购人
地处江南甲地的陈某向地处江北乙地的王某购买五吨苹果,约定江边交货。后双方就交货地
最新回复
(
0
)