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
To understand how astrology works, we should first take a quick look at the sky. Although file stars are at enormous distances,
To understand how astrology works, we should first take a quick look at the sky. Although file stars are at enormous distances,
admin
2013-01-12
67
问题
To understand how astrology works, we should first take a quick look at the sky. Although file 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, maintain fixed patterns on the sphere, just as the continent of Australia 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 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.
Which of the following is true about the motion of the moon?
选项
A、The moon and the sun are moving in the same place.
B、The moon revolved along the ecliptic.
C、The moon moves faster than the sun.
D、The position of the moon can be found changed in an hour’s time.
答案
D
解析
根据第三段的第二句和第三句话,文中说月亮的位置变化相对而言比较快,尽管看起来每天起起落落,事实上它的运动间歇为一个小时。由此可以肯定,D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/9r9O777K
0
考博英语
相关试题推荐
Peoplewhobegintogodeafinadultlifehavedifferentproblemsfromthosewhoareborndeaf.Theyhavetolearndifferentway
Theteachergavethestudentsextraworkbecauseshewas______byallthenoiseandtalkingintheclassroom.
Thedoctortoldthepupilsthatan______diseasewasonethatcouldbepassedfromonepersontoanother.
Althoughwomenclustertohimlikemothsaroundaflame,heisnone______happierforit.
WhenJackwaseighteenhe______goingaroundwithastrangesetofpeopleandstayingoutverylate.
Thechiefeditorthoughthetooksomelibertieswiththeoriginalintranslation.Soitwasnecessarythathemakethe______su
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsfro
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarkablefirstforwhatitcontains:therangeofnewsfro
Sheboughtahousenearthesealastyearsoshecouldtakea____alongthebeachwhenevershewantedto.
Itwastheresponsibilityofgovernmenttoprovideinstructionsothatthetalentedwouldbeabletoentergovernmentservicean
随机试题
地下工程防水混凝土应连续浇筑,宜少留施工缝。下列各项施工缝的留置,说法正确的有()。
女性,58岁。25年前曾患右上肺结核,经INH、SM和PAS治疗约1年。4年前病灶复发,痰结核杆菌(++),应用2HRZ/4HR治疗,痰菌转阴,病灶吸收满意。近1个月咳嗽、痰中带血再次就诊。X线示右上肺前段阻塞性炎症,支气管分层示前段支气管阻塞。痰脱落细胞
按开发后的经营方式细化的公式为()。
施工质量控制是在明确的质量方针指导下,通过对施工方案和资源配置的计划、实施、检查和处置,进行施工质量目标()的系统过程。
软土地基的特点的有().
关于MA的介绍,以下内容中错误的是()。
在有关营销组合的诸多观点中,最具影响力的当属“4P”营销组合。下列各项不属于4P组合的是()。
当今世界上对导游员的资格认证,对导游职业形态和导游服务质量标准的规定及管理,都是导游服务()的重要体现。
Ingeneral,oursocietyisbecomingoneofgrandenterprisesdirectedbyabureaucraticmanagementinwhichmanbecomesasmall,
品牌
最新回复
(
0
)