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
Geography and Movement To understand how astrology works, we should first take a quick look at the sky. Although the stars
Geography and Movement To understand how astrology works, we should first take a quick look at the sky. Although the stars
admin
2010-01-14
99
问题
Geography and Movement
To understand how astrology works, we should first take a quick look at the sky. Although the stars are at enormous distances, they do indeed give the impression of being affixed to the inner surface of a great hollow sphere surrounding the earth. Ancient people, in fact, literally believed in the existence of such a celestial sphere. As the earth spins on its axis, the celestial sphere appears to turn about us each day, pivoting at points on a line with the earth’s axis of rotation. This daily turning of the sphere carries the stars around the sky, causing most of them to rise and set, but they, and constellations they define, maintains fixed patterns on the sphere, just as the continent of Australian maintains its shape on a spinning globe of the earth. Thus the stars were called fixed stars.
The motion of the sun along the ecliptic is, of course, merely a reflection of the revolution of the earth around the sun, but the ancients believed the earth was fixed and the sun had and independent motion of its own, eastward among the stars. The glare of sunlight hides the stars in daytime, but the ancients were aware that the stars were up there even at night, and the slow eastward motion of the sun around the sky, at the rate of about thirty degrees each month, caused different stars to be visible at night at different times of the year.
The moon, revolving around the earth each month, also has an independent motion in the sky. The moon, however, changes it position relatively rapidly. Although it appears to rise and set each day, as does nearly everything else in the sky, we can see the moon changing position during as short an interval as an hour or so. The moon’s path around the earth lies nearly in the same plane as the earth’s path around the sun, so the moon is never seen very far from the ecliptic in the sky. There are five other objects visible to the naked eye that also appear to move in respect to the fixed background of stars on the celestial sphere. These are the planets Mercury, Venus, Mars, Jupiter, and the Saturn. All of them revolve around the sun in nearly the same plane as the earth does, so they, like the moon, always appear near the ecliptic. Because we see the planets from the moving earth, however, they behave in a complicated way, with their apparent motions on the celestial sphere reflecting both their own independent motions around the sun and our motion as well.
The ancient people believed that______.
选项
A、the earth was spinning on the axis of the sky
B、the sky was a hollow sphere spinning around the earth
C、the patterns of stars on the sky would never change
D、the stars around the sky were not stationary
答案
C
解析
根据第一段最后两句话,我们可以看出古人认为是地球的转动带动了群星的转动,而群星事实上在天空中保持不变的模式,是恒定的。所以,正确答案应为C。
转载请注明原文地址:https://kaotiyun.com/show/schd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
LoweringtheRiskofHeartDiseaseLikemillionsofotherAmericans,Icomefromafamilywithahistoryofheartdisease.Myfa
PeopleinthepastheldthatthedifferencebetweenlifeanddeathMoreandmorepeoplearebeginningtoaccepttheideathata
CallingforSafeCelebrationsLastFourthofJuly,Pete,a14-year-oldboy,wasenjoyingthelit-upskiesandloudboomsfro
OnThanksgivingintheUnitedStates,familiesgatherandgivethanksfortheblessing(祝福)ofthepastyear.
Theconstructionoftherailwayissaidtohavebeenterminated.
RuthBenedict’shighlypopularbookPatternsofCulturestressedtheroleofcultureinpersonalityformation.
SomeUnusualCelebrationsSomeholidaysarewell-knownallaroundtheworld.AmongthemareNewYearsEvecelebrations.Al
ThereisalwaysexcitementattheOlympicGameswhenanathlete(breaks)arecord.
EleanorRoosevelt’sdedicationtohumanitariancauseswonheraffectionandhonorathomeandabroad.
TransportandTrade1Transportisoneoftheaidstotrade.Bymovinggoodsfromplaceswheretheyareplentifultoplaceswher
随机试题
亚欧大陆中部、北美洲中部和南美洲南部分布着()。
给定资料: 1.世界经济的迅猛发展带来了诸如资源短缺、环境污染、臭氧层被破坏、全球气候变暖、生态失衡等一系列世界性的环境恶化问题。同时,随之而来的环境污染对食物的危害,使人们认识到环境污染、自然生态系统失衡,最终将危及人类自身的生存和发展。许多国际环境公
肢体各层面放大率不同,计算放大率的依据是
现浇结构模板安装的轴线位置偏差的允许偏差为()mm。
根据标的物不同,招标发行包括()。
认为动物界也存在教育活动的学者是()。
李进:这学期没有女生获得“银士达”奖学金。王芳:这就是说这学期没人获得“银士达”奖学金。李进:不,事实上有几个男生这学期获得了“银士达”奖学金。王芳的回答可能假设了以下所有的断定,除了:
求∫13dx∫x-12dy.
AgingposesaseriouschallengetoOECD(OrganizationofEconomicCo-operationandDevelopment)countries,inparticular,howtop
【B1】【B19】
最新回复
(
0
)