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
2024-03-03
58
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 discuss at the annual astronomy society meeting last month?
W: Yes. For the first time ever the scientific community has established the existence of planets 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 these planets?
W: Well, you have to understand that they are a billion times dimmer than their parent stars. It would be like trying to see the light of a candle next to a huge explosion. 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. 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 was caused by 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 will 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 telltale signs of life on these planets.
M: I’m looking forward to hearing 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
[听力原文]
How did the scientists establish the existence of the planets?
综合推断题。女士说天文学家是通过间接方法来发现那些行星的,他们测量出母星发出的光频的细微变化,还观察到母星似乎前后摆动,最终确定这都是由于沿轨道运行的行星的牵引而引起的,由此推断,科学家们是通过研究母星外观的变化来确定行星的存在的,故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/3502992.html
相关试题推荐
[originaltext]Hello,everyone.Wewilltalkaboutthetechnologytoday.You
[originaltext]Goodmorning,everyone.I’mgoingtotalkabouttheenvironme
[originaltext]Goodmorning,everyone.I’mgoingtotalkabouttheenvironme
[originaltext]Moderator:Goodevening,ladiesandgentlemen.It’smygr
[originaltext]Moderator:Goodevening,ladiesandgentlemen.It’smygr
[originaltext]Moderator:Goodevening,ladiesandgentlemen.It’smygr
[originaltext]Aswithsomanyotherthingsinlife,exercisemayworkbest
[originaltext]Anewsystemhasbeendevelopedtomeasurethehealthofthe
[originaltext]Anewsystemhasbeendevelopedtomeasurethehealthofthe
[originaltext]W:Hi,Jim.Whatareyoudoing?M:Oh,hi,Linda.I’mworkingon
随机试题
1.Thesinglelongastockfigureinstories,songsandpersonalads.wastra
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Americansseemtobecoolingtowardglobalwarming.Just57percentthinkth
根据《建筑工程建筑面积计算规范》GB/T50353-2013规定,建筑物的建筑面
除法律、行政法规另有规定外,账簿、会计凭证、报表、完税凭证及其他有关资料应当保存
( )是指代理人根据人民法院或者指定机关的指定而进行的代理。A.法定代理 B
A.急性出血性结膜炎 B.急性单纯疱疹性角膜炎 C.急性闭角性青光眼 D.
高层建筑采暖管道安装工艺流程为:安装准备→预制加工→卡架安装→干管安装→立管安装
下列哪种说法符合恶性组织细胞病A.常表现为全血细胞减少B.女性多于男性C.主要临
前列腺增生患者最重要的症状是( )。A.尿潴留 B.排尿困难 C.尿失禁
最新回复
(
0
)