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
A、4000 - 5000. B、50 - 60,000. C、500 - 600. D、5000 - 6000. D此题考查听细节的能力。只要抓住关键词“5000 to 6000 years ago”。
A、4000 - 5000. B、50 - 60,000. C、500 - 600. D、5000 - 6000. D此题考查听细节的能力。只要抓住关键词“5000 to 6000 years ago”。
admin
2013-02-24
114
问题
Not until somewhat recently (that is, in terms of human history) did people find a need for knowing the time of day. As best we know, 5000 to 6000 years ago great civilizations in the Middle East and North Africa initiated clock-making. With their bureaucracies and formal religions, these cultures found a need to organize their time more efficiently.
The Egyptians were the next to formally divide their day into parts something like our hours. Obelisks (slender, tapering, four-sided monuments) were built as early as 3500 B. C. Their moving shadows formed a kind of sundial, enabling citizens to partition the day into two parts by indicating noon. They also showed the year’s longest and shortest days when the shadow at noon was the shortest or longest of the year. Later, markers added around the base of the monument would indicate further time subdivisions.
Another Egyptian shadow clock or sundial, possibly the first portable timepiece, came into use around 1500 B.C. to measure the passage of "hours". This device divided a sunlit day into 10 parts plus two "twilight hours" in the morning and evening. When the long stem with 5 variably spaced marks was oriented east and west in the morning, an elevated crossbar on the east end cast a moving shadow over the marks. At noon, the device was turned in the opposite direction to measure the afternoon "hours".
In the quest for more year-round accuracy, sundials evolved from flat horizontal or vertical plates to more elaborate forms. One version was the hemispherical dial, a bowl shaped depression cut into a block of stone, carrying a central vertical gnomon (pointer) and scribed with sets of hour lines for different seasons. The hemicycle, said to have been invented about 300 B. C. , removed the useless half of the hemisphere to give an appearance of a half bowl cut into the edge of a squared block.
选项
A、4000 - 5000.
B、50 - 60,000.
C、500 - 600.
D、5000 - 6000.
答案
D
解析
此题考查听细节的能力。只要抓住关键词“5000 to 6000 years ago”。
转载请注明原文地址:https://kaotiyun.com/show/fAu7777K
0
大学英语四级
相关试题推荐
ThanksgivingisAmerica’snationalholidayforgivingthankstoGod.ThanksgivingDayhasaspecial【S1】______forAmericansbecau
A、Thefrogs.B、Theants.C、Theowls.D、Thebeavers.B题干询问哪种动物在运动中很活跃。短文中提到,蚂蚁经常会有赛跑、摔跤等体育运动项目,故答案为B)。
A、Thenumberofpeoplewhotakethetests.B、Languagesthatthetestpapersarebasedon.C、Testingmethodsthatthespeakingte
A、Theywillputuptheirfavoriteshowinfrontoftheirclassmates.B、Theymaymisstheirfavoriteshowtonight.C、Theywilldo
Scandalsarerootedintest-basedsystems;theyexistwithorwithoutfraud.Wesellourchildrenshortwhenwesendthemtosch
A、Heisoftenaskedtogoandseeexhibitions.B、Hewouldliketogoandseetheexhibition.C、Hewenttoseetheexhibitionlas
Ifyou’replanningtotraveloverseas,themostcommonformof【B1】______isbyairplane.Knowingtheentire【B2】______frombuying
Ifyou’replanningtotraveloverseas,themostcommonformof【B1】______isbyairplane.Knowingtheentire【B2】______frombuying
A、Catchabus.B、Demandatelephonenumber.C、Cashacheck.D、Makeaphonecall.D根据选项,推测对话的内容与动作或者行为相关,第一位发言人说“I’vebeentrying
随机试题
学生年龄特征中所指的两个方面是()
化学消毒剂按其化学结构分为哪几种?
宫颈阴道部覆盖的上皮为宫颈管内膜的上皮为
大疱性表皮松解症临床表现的共同特点是
某电子科技有限公司因涉嫌虚开增值税专用发粟罪被提起公诉,公司董事长、总经理、会计等5人被认定为该单位犯罪的直接责任人员。在法院审理中,该公司被注销。关于法院的处理,下列哪一选项是正确的?()
东风公司购入旧设备一台,实际支付价款8000元,支付运杂费500元,安装费1000元,出售单位的该设备账面原值为10000元,已提折旧3500元。则该设备入账的原值为()。
印象管理的策略包括()。
我国发展社会主义科学和文化艺术事业的基本方针是()。
求下列函数的导数:;
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmaller(36)______,facespractic
最新回复
(
0
)