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
2011-05-26
17
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 tile sky in all 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、about a day
B、for an hour
C、afternoon
D、years
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/LslC777K
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
Areyouconscious______anyreasonwhyheshouldnotbeenrolledinthisuniversity?
Someyearsagothecaptainofashipwasveryinterestedinmedicine.Healwaystookmedicinebookstoseaandlikedtotalkabo
Theslightest______(care)indrivingcanresultinaterribleaccident.
TherewerenoticketsavailableforFriday’s______(perform).
Childrennormallyfeelalotof______abouttheirfirstdayatschool.
EarthDayfallson______.WhichofthefollowingwasNOTmentionedastowhatpeoplearoundtheworlddidtocelebrateEarthD
Hedidn’twanttogotothecinemabuttheybeggedsohardthathe______andwentwiththem.
Anewcameasasurprisethatanelderlywomandiedyesterdayafter【21】knockeddownbyamotoristwhohadmadeno【22】tobrake(刹
Grandmatoldthestoryinaverysad______andwewereallmoved.
随机试题
在胸骨左缘第2肋间触及连续性震颤可见于
关于质量管理方法,错误的是
寒凝血瘀,月经不调,少腹冷痛,当选用下列何种性味的药物
外墙围护系统包括厂房四周的外墙、()、墙梁和基础梁等。
两个以上法院都有管辖权的诉讼,原告可以向其中一个法院起诉(选择管辖);原告向两个以上有管辖权的法院起诉的,由最先立案的法院管辖。()
“不登高山,不知天之高也;不临深溪,不知地之厚也。”这句话说明()。
数据模型是严格定义的一组概念的集合。通常由数据结构、数据操作和【】3部分组成。
设有如下通用过程:PublicFunctionf(xAsInteger)DimyAsIntegerx=20y=2f=x*yEndFunction在窗体上
—Yourcitylooksbeautiful!—Yes.Lotsoftreesandgrass_____lastyear.
TheImportanceofJustBeingThere"What’sthemostimportantthingyou’vedoneinyourlife?"Thequestionwasputtomedu
最新回复
(
0
)