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
2023-11-13
28
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/3184374.html
相关试题推荐
Whatdoestheman’sfatherwanthimtodo?[br][originaltext]W:Youdon’tlook
Whatdoestheman’sfatherwanthimtodo?[originaltext]W:Youdon’tlooktobe
Whatcanweknowaboutthemanfromtheconversation?[br][originaltext]W:Hey
WhowillbetheballgirlsattheMastersSeriesMadridevent?[originaltext]
Theaccidenthappenedin[br][originaltext]Maskedassailantswithgrenades
Theaccidenthappenedin[br][originaltext]Maskedassailantswithgrenades
ThecasualtiesfortherivalMuslimmilitiaswere[br][originaltext]Tanka
Whydopeopleleavehometotravelaccordingtothepassage?[br][originaltext
Whydopeopleleavehometotravelaccordingtothepassage?[originaltext]P
Beethovenestablishedhimselfasthegreatestcomposer[br][originaltext]B
随机试题
Culturereferstothesocialheritageofapeople—thelearnedpatternsfo
Writing&BookCampAugust9—13,2013atVancouverPu
Asociety’seconomic【B1】______anditsculture,ortraditionsandwayoflife
下列关于汉字特点的表述,正确的有( )。A.汉字是表意体系的文字 B.汉字的
下列关于三级资质标准表述正确的是()。A.企业近3年承担过3项以上单位工程造价
某基金2016年1月1日投资A公司100万元,获得A公司20%股权份额,2016
A.阿霉素B.放线菌素DC.环磷酰胺D.丝裂霉素E.紫杉醇抗瘤谱较窄,对放疗有增
对于健康教育与"卫生宣教"的主要区别,说法正确的是A.健康教育是简单的信息传播
【继电保护及自动装置】183、()瞬时电流速断的电流是按躲过被保护线路末端的
“钟鸣鼎食”往往用来形容贵族生活。考古发现的青铜乐器“钟”始见于周代遗址,可能存
最新回复
(
0
)