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
专升本
Everyone uses the expressions AM and PM. But do you exactly know what they mean and how they came into being? As you know, t
Everyone uses the expressions AM and PM. But do you exactly know what they mean and how they came into being? As you know, t
admin
2011-03-26
56
问题
Everyone uses the expressions AM and PM. But do you exactly know what they mean and how they came into being?
As you know, the turning of the earth makes the sun and the stars seem to move across the sky. Daylight, of course,【21】,when the sun rises in the east and when the sun is high【22】the sky, between these two positions, half of the daylight hours have been spent.
Therefore, by noticing【23】the sun stood in the sky, early man know they could tell the time of the day. At night the motion of the stars【24】the same purpose. The important thing in keeping time is to know the exact moment of【25】. For each of us, wherever we are, noon is when the sun is directly overhead. Think of an imaginary line【26】the sky,, stretching from the north point of your horizon just to the south point.
When the sun cross your meridian (子午线), it is noon for you. When the sun still【27】of this line, or the meridian, it is morning. After the sun has crossed this line, it is【28】.
The Latin word for "midday" is "deridian",【29】which comes our word meridian. So AM is an abbreviation(缩写词) for "ante meridean", or before midday, and PM for after midday. Each or the world’s time zones (时区)is about fifteen degrees wide in longitude (经度), which is about the distance the sun moves through the sky in an hour.【30】lives in the same time zone observes noon at the same moment. In this way, the time is different by one hour as you move through each time zone.
选项
A、in
B、shining
C、rising
D、falling
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/EavC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Somepeoplethinkthemoreexpensiveaproductis,thebetteritwillbe.(但事实并非如此).
IncomparingallofEarth’sgeologicalevolutiontoonecalendaryear,theauthorshows______.InthecompressedhistoryofEa
Before1914femalesecretarieswererarebecausethey______.Secretaries,untilrecently,hadtodoalotofworknowdoneby
Thisyear’stotaloutputvalueofindustryandagriculturewillincrease______5percentoverlastyears.
HolidaycelebrationsintheUnitedStatesoften______.Thejudge______.
Insteadofgoingintodetailsabouthisproject,hespoke______.
Forthispartyouareallowed30minutestowriteacompositiononthetopic:TheLifeontheInternet.Youshouldwritenoless
Aspointedoutatthebeginningofthepassage,peopleusedtothinkthatairpollution______.Astothegreenhouseeffect,th
A、neededB、trainedC、borrowedD、deservedA
IwasdisappointedwiththefilmIhadexpected______tobemuchbetter.
随机试题
下列对于诊断肝气郁结证最无意义的是
A.pH
急性T淋巴细胞白血病可出现的免疫表型是
应用强心苷期间严禁()。
进行工程质量事故处理的主要依据包括( )。
根据《安全生产法》,当从业人员发现事故隐患或其他不安全因素时,应当立即向()报告。
在国际海上货物运输中,从中国出口途经美国西海岸港口后转运到墨西哥的货物不需要进行美国海关AMS申报。()
根据植物新品种保护条例及相关规定,下列说法哪些是正确的?
阅读下面一段文言文,完成下列题目。群臣皆出,独留阳平公融,谓之曰:“自古定大事者,不过一二臣而已。今众言纷纷,徒乱人意,吾当与汝决之。”对曰:“今伐晋有三难:天道不顺,一也;晋国无衅,二也;我数战兵疲,民有畏敌之心,三也。群臣言晋不可伐者,皆忠臣
Thespeakerfeelsthatmanyphotographsaremoreactualthanpaintingsbecause
最新回复
(
0
)