首页
登录
职称英语
What is special about this class? [br] [originaltext] Good morning everyone.
What is special about this class? [br] [originaltext] Good morning everyone.
游客
2024-10-13
18
管理
问题
What is special about this class? [br]
Good morning everyone. My name is Professor Michael Andrews. On behalf of myself and my colleagues, I would like to welcome you to Extrasolar Planetology, which is a new class being offered by the Astronomy Department this year.
About twenty-five years ago, there was no solid proof that other planets existed beyond our solar system. Most astronomers at that time felt that planets had to be out there, but they could not see them or prove they were there. Why? Simply put, planets are small and space is vast. Imagine trying to see a pea with a telescope from a hundred miles away, and you’ll understand how hard it is to find planets that are light years distant.
Clearly, something changed, for we now have a class called Extrasolar Planetology. What changed? Well, mainly, instruments got better and sophisticated telescopes were put into space. As a result, astronomers began to find the proof that they had lacked before.
The very first good evidence for the existence of other planets came from observations of ’wobbling’ stars. Using their high-tech instruments and space-based telescopes, astronomers found that some stars wobbled as they moved through space. What could be causing this the astronomers wondered? And then Eureka! The only likely explanation seemed to be that these stars were being affected by the gravity of unseen orbiting companions. In other words-planets!
And now, if you would please turn off the lights, I would like to show you some slides of a few of these wobbling stars.
选项
A、Proof.
B、Gravity.
C、Colleagues.
D、Instruments.
答案
B
解析
细节题。是什么在影响恒星。根据讲座内容,是来自行星的引力,从“The only likely explanation seemed to be that these stars were being affected by the gravity of unseen orbiting companions.In other words-planets!”可知。根据常理也可推断出其他选项都是不合理的。
转载请注明原文地址:https://tihaiku.com/zcyy/3798936.html
相关试题推荐
WhichisNOTthecooperationwithChinaandRussia?[br][originaltext]Chine
Whatcanbeinferredfromthenews?[originaltext]PoliceinSpainsaythat
Whatisthetalkmainlyabout?[br][originaltext]Itiscommonknowledget
Whatisthetalkmainlyabout?[originaltext]Itiscommonknowledgethatmu
What’stheconversationmainlyabout?[br][originaltext]M:Ijustlearnedfrom
What’stheconversationmainlyabout?[br][originaltext]M:Ijustlearnedfrom
What’stheconversationmainlyabout?[originaltext]M:IjustlearnedfromtheT
Whatarethepossiblerelationshipbetweenthemanandthewoman?[originaltext]
WhatdestroyedSaint-Pierre?[br][originaltext]PeoplesaidthatSaint-Pie
Whatistheconversationfocusedon?[br][originaltext]W:Ipersonally,um,do
随机试题
[img]2012q1/ct_eilm_eillist_0399_20121[/img][br][originaltext]IfI’vepersuad
A.sensibleB.comprehensiveC.readilyD.incaseE.sensitiveF.passi
A.removeB.judgeC.intelligenceD.indicate
Thomaswasarealfriend,forheadvisedmeaswellas(help)____________mewith
[originaltext]Attheendofeveryyear,U.S.weatherresearcherslookback
Word安装完毕第一次启动时,屏幕上的缺省工具栏是()。A.格式 B.常用
关于紧急救护,以下说法不正确的是A.遇有患者病情危急时,护士应立即通知医师 B
期货结算机构的职能有()。A.监控期货交易所财务风险 B.结算期货交易盈亏
下列房产中免征房产税的是()。A.自收自支事业单位向职工出租的单位自有住房
债务人或者第三人有权处分的下列权利中,可以质押的是()。A.建设用地使用权
最新回复
(
0
)