首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The stars will move farther away from each other. B、All the stars will remain in place in relation to each other. C、Eventually
A、The stars will move farther away from each other. B、All the stars will remain in place in relation to each other. C、Eventually
admin
2022-11-27
108
问题
Today most astronomers accept the notion that groups of stars that make up the universe are all moving farther and farther away from each other. But until very recently, this idea of an expanding universe was not a theory most European scholars believed in. Since ancient times and up to about the 17th century, most of these scholars thought the size of the universe had remained unchanged since the moment of its creation or perhaps forever, with all the stars remaining more or less in place in relation to each other. But that was challenged in the late 17th century by Isaac Newton’s idea of gravity as a force of attraction, which contradicted the idea of a universe that is static, unchanging. If gravity causes all the stars out there in space to attract each other as Newton said, then they could remain centrally motionless. Sooner or later all the stars will fall in towards each other. Well, scientists then proposed a new model, taking Newton’s theory into account. They didn’t want to abandon the idea of motionless stars, but for this model to work, so the stars wouldn’t fall in each other. They had to modify Newton’s law of gravity, so they theorized that for distance as large as those between stars, the gravitational force repels rather than attracts. As you might guess, this led to some other contradictions. But this was prettily resolved in the past centuries by the currently accepted theory, which says the universe is continuously expanding. Questions 20 to 22 are based on the passage you have just heard.
20. What theory challenged the idea about the size of the universe?
21. What will happen if it is gravity that causes all the stars in space to attract each other?
22. What is the speaker mainly talking about?
选项
A、The stars will move farther away from each other.
B、All the stars will remain in place in relation to each other.
C、Eventually all the stars will fall in towards each other.
D、All the stars will continuously expand and finally explode.
答案
C
解析
短文指出,如果如牛顿所说,重力使太空中的所有星星互相吸引,那么它们能够维持中心部分的静止。但是,迟早所有的星星会撞向彼此。
转载请注明原文地址:https://jikaoti.com/ti/IzWnFFFM
0
大学英语四级
相关试题推荐
垂体微腺瘤MRI信号特点是
如果对方提出了索赔要求,则应采取各种措施来反击或反驳对方的索赔要求。通常应采取的措施是()。
Wheredoesthemanenjoygettinghisnewsfrom?
WhatdoesJeromesayabouttheexperienceofwritinghisdissertation?
(1)We’reswimmingindata,andwecan’thelpbutuseit.LikesonFacebookmeasureoursocialstanding,financialindicatorssl
(1)ThelibraryatWoodgrovePrimarySchoolhasbeenturnedintoa"Maker-Space".Afterregularlessonsendataround2p.m.,pu
Arapidmeansoflong-distancetransportationbecameanecessityfortheUnitedStatesassettlementspreadfartherwestward.F
Whataresomeoftheaudiencegoingtodoaftergraduation?Starttheir___________________aftergraduation.
A、Thenumberofgraduatesisincreasingeachyear.B、Thetechnologyandworkplacesarechangingfaster.C、Therearemorevacant
A、Nothingspecialhappenedtoherrecently.B、Sheboughtasupplyofbuildingmaterials.C、Shewenttoanewly-builtschool.D、S
随机试题
某外贸进出口公司经营各种进出口货物,2011年5月份发生以下业务:(1)进口办公设备500台,每台进口完税价格1万元,委托运输公司将进口办公用品从海关运回本单位,支付运输公司运输费用9万元,取得了运输公司开具的运输发票。(2)当月以每台1.8万元的含税
下列定义变量的语句中错误的是()。
(2006年第46题)下列关于非霍奇金淋巴瘤的叙述,错误的是
下图表示人的室颤电流与电流持续时间的关系。该图表明,当电流持续时间超过心脏搏动周期时,人的室颤电流约为()。
关于重大责任事故罪,下列说法中正确的有()。
业主作为物业的主人,具有充分的自主()
定量研究的逻辑方法是()。
“一个人要不主动学会些什么,他就一无所获,不堪造就……人们可以提供一个物体或其他什么东西,但是人却不能提供智力。人必须主动掌握、占有和加工智力。”这是()的名言。
加强行政管理是减少治安危害,建立良好社会秩序的重要手段,是直接维护社会治安秩序的基础工作。( )
在考生文件夹下,存在一个数据库文件“samp1.accdb”,里边已经设计好了表对象“tDoctor”、“tOffice”、“tPatient”和“tSubscribe”。试按以下操作要求,完成各种操作:通过相关字段建立“tDoctor”、“tOffi
最新回复
(
0
)