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
71
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
酒作为一种特殊的文化载体,在人类交往中占有独特的地位。中国是酒的故乡,酒和饮酒文化在中国的历史中一直占据着重要地位。不同地区及场合的饮酒习俗和礼仪已成为
MorethantwohundredyearsagotheUnitedStates______fromtheBritishEmpirea
大脑学习的发展历程可以分为四个阶段为:A.感觉通路的建立 B.感觉动作的发展
区分五脏、六腑和奇恒之府的最主要依据是()A.分布部位的不同 B.解
以下不属于双相真菌的是A.组织胞浆菌B.申克孢子丝菌C.小孢根霉D.马内菲青霉E
共用题干 夏某夫妇计划于明年生育一个宝宝,请理财规划师为其调整家庭的风险管理和
1999-49.镇肝熄风汤中生麦芽的主要作用是 A.消食和中B.疏肝解郁
公安机关要及时向党委汇报重要的敌情、社情和治安情况,党委根据具体情况提出( )
左边给定的是纸盒的外表面,右边哪一项不能由它折叠而成?( )
甲公司目前有A、B、C三个独立的投资项目可供选择,A与B寿命期限不同,B与C初始
最新回复
(
0
)