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
28
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、east
B、west
C、south
D、north
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/KivC777K
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
Somepeoplewillbeatalosswhattodo(incaseofafire).
Insteadofresearchingandwritingtheirpapers,somestudents______.UsingtheprogramdevelopedatUniversityofCalifornia
Manypeoplehaveappliedforthe______position.
Myuncle______fromthecompanybecausehewasmadetoundertakedangerousassignments.
Themayortogetherwithhistwobrothers______goingtobeindictedforacceptingbribes.
Manycountriesareincreasingtheiruseofnaturalgas,windandotherformsof______.
Somepeoplethinktheyhaveananswertothetroublesofautomobilecrowdinganddirtyairinlargecities.Theiransweristhe
—Thegroundiswet—Itmusthaverainedlastnight,_____?
IwasdisappointedwiththefilmIhadexpected______tobemuchbetter.
Itissaid_____MrTomhasarrivedinNewYork.
随机试题
建设项目竣工总结算在最后一个单项工程竣工结算确认后l5天内汇总,送业主后()天内审查完成。
根据进出境旅客行李物品“双通道制”的通关规定,下列表述中正确的是()。
甲公司是一家大型零售企业,其20×9年度发生的相关交易或事项如下:(1)20×9年1月1日,甲公司与乙公司签订商业用房租赁合同,向乙公司租入A大楼一至四层商业用房用于零售经营。根据租赁合同的约定,商业用房的租赁期为10年,自合同签订之日算起,乙公司有权在
位于中央窝上的视觉神经细胞是()。
下列哪个选项不属于我国国家监督体系?()
根据下列材料回答问题。2015年末,我国规模以上高技术制造业共有企业26894家,比2010年增加1077家;占规模以上制造业企业数的比重为7.8%,比2010年提高1.3个百分点。2015年末,我国高技术制造业从业人员1293.7万人,比2010年增
请简述多元回归分析模型包含的假设。
Thechildrennextdooroftenplaythefootballin【M1】______agardenbehindmyhouseandsometimesbreakm
"Theeffectofthismedicine______bymidnight,"thedoctortoldEmma,"Youhadbetternottrytoreadtonight."(北京大学2005年试题)
WhatpercentageofstudentsisstayingawayfromschoolinZimbabwein2008?
最新回复
(
0
)