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
23
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、comes
B、begins
C、appears
D、shines
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/bavC777K
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
在《爱尔克的灯光》中,“爱尔克的灯光”的象征意义是【】
Mostpeople______.New-bornbabies______.
Forthispart,youaresupposedtowriteashortessayinabout100-120wordsbasedonthefollowingsituation.描写发生在你或你的朋友身
Areyouconscious______anyreasonwhyheshouldnotbeenrolledinthisuniversity?
Accordingtothepassage,theauthorthinksofeachinterviewas______.Ifyouarenotemployedbyacompany,youshouldNOT_
Whatmatters______notwinningbutparticipating.
Heremainedcalmeven(面临)suchobviousdanger.
Manyanimalsareusedtohelpscientistsfindcuresfordiseases.Oneofthemostcommonanimalsusedismonkeys,orprimates.T
Wemustbegintestingtheinstrument,nomatter______difficultitis.
1970wasWorldConservationYear.TheUnitedNationswantedeveryonetoknowthattheworldisindanger.Theyhopedthatgovern
随机试题
SARS的首发症状是
有关锐利度的叙述,错误的是
起征点是指税法规定的对课税对象开始征税的最低界限。()
在工程网络计划执行过程中,当某项工作的总时差刚好被全部利用时,则不会影响( )。
根据《劳动法》的有关规定,对女职工实行特殊保护制度,下述各项符合劳动法的有()。
法兰与管道连接时,按照标准规定,下列焊接形式正确的是()。
某县城一家房地产开发企业(增值税一般纳税人)2017年5月向政府部门支付土地使用权价款1750万元和契税52.5万元取得一宗土地的使用权且已取得相应的财政票据和契税完税凭证,将其中80%的面积用于开发建造10栋住宅楼。当年建成后,80%的建筑面积于11月直
图中c、d所代表的大洲分别是()。
Whenadiseaseofepidemicproportionsthreatensthepublic,scientistsimmediatelygettowork,tryingtolocatethesourceof
A、AtthetimeofPearlHarbor.B、BeforehisPhDexams.C、In1941.D、In1936.C
最新回复
(
0
)