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
No one knows when the first calendar was developed. But it seems possible that it was based on lunar months. When people started
No one knows when the first calendar was developed. But it seems possible that it was based on lunar months. When people started
admin
2010-07-19
54
问题
No one knows when the first calendar was developed. But it seems possible that it was based on lunar months. When people started fanning, the sages of the tribes became very important. They studied the sky and gathered enough information to be able to predict when the seasons would change, and were able to announce when it was time to plant crops.
The divisions of time we use today were developed in ancient Babylonia 4,000 years ago. Babylonian astronomers believed the sun moved around the Earth every 365 days. They divided the trip into 12 equal parts, each with 30 days. Then they divided each day into 24 equal parts or hours, and divided each hour into 60 minutes, each minute into 60 seconds.
Humans have used many devices to measure time. he sundial was one of the earliest and simplest. However, the sundial worked well 0nly when the weather was fine, so other ways of measuring the passing of time were invented. One device was the hourglass. By the eighteenth century, people had developed mechanical clocks and watches. So we have devices to mark the passing of time, but what time is it now? Clocks in different parts of the world do not show the same time at the same time, because time on Earth is set by the sun’s position in the sky above us. As international communications and travel grew, it became clear that a way to establish a common time for ’all parts of the world was needed. In 1884, an international conference divided the world into 24 time zones, each zone represents 0ne hour. The astronomical observatory in Greenwich, England, was chosen as the starting point for the time zones. Twelve zones are west of Greenwich. Twelve arc east. The time at Greenwich measured by the sun is considered by astronomers to be Universal Time, also known as Greenwich Mean Time.
According to the passage, Greenwich Mean Time______.
选项
A、is the 12th of 24 time zones
B、is calculated from the sun
C、was named when chosen at an international conference because of its strategic location in the world
D、provides the same time for all of the world
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/FylO777K
0
专业英语八级
相关试题推荐
ThelargestcityinCanadais______.
Someconsumerresearchersdistinguishbetween"rational"motivesand"emotional"motives.Theyusetheterm"rationality"inthe
ItcanbeinferredfromthefirstparagraphthatcosmologistsWhichofthefollowingstatementsisNOTtrueofthecosmos?
ComingHome:LifeAfterStudyingAbroadManyreturneeswhohavestudiedabroadmaysufferre-entrycultureshockwhentheyg
France’sstandoftheconflictbetweenIsraelandPalestineis
Peopledonotanalyzeeveryproblemtheymeet.Sometimestheytrytorememberasolutionfromthelasttimetheyhadasimilarp
ThecapitalcityofAustraliais_____.
TherepublicanmovementhasbeengatheringmomentuminAustraliasincebecamePrimeMinisterin199
A、BushmetIraqiPrimeMinisteronFriday.B、BrzezinskiisamemberofRepublicanParty.C、Americanpeoplehavenomuchconfiden
Peopleunderstresshaveperformedspecificfeatsofstrength,likeliftinganautomobileoffanaccidentvictim.
随机试题
A.球形病毒B.砖形病毒C.弹状病毒D.丝状病毒E.蝌蚪状病毒噬菌体大多是()
右侧标志指示前方收费站设有电子不停车收费行驶车道。
Thepaperparcel______acleanshirt,socksandahandkerchief.
属于用药合理的配伍方案是
称取“3g”系指称取重量为()
下列有关具有提前赎回条款的债券的表述错误的是()。
我们在接触新朋友时,经常会出现刚打过招呼转头就忘记对方姓名的现象。这是由瞬时记忆容量小的特点决定的。()
A.婴儿B.幼儿C.学龄儿童D.成年人E.老年人首次接受口腔健康检查的人群应该是()。
法律责任的减轻和免除
“世界上最遥远的距离,莫过于我们坐在一起,你却在玩手机。”有人因为使用手机成瘾,让手机变成了“手雷”,严重影响身心健康。对此,我们应该()
最新回复
(
0
)