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
It was probably around 3,000 years ago that people first began making things to help them measure the passage of time. Having no
It was probably around 3,000 years ago that people first began making things to help them measure the passage of time. Having no
admin
2008-08-04
37
问题
It was probably around 3,000 years ago that people first began making things to help them measure the passage of time. Having noticed that shadows move around trees as the sun moves across the sky, someone drew a circle and put a stick in the center. As the sun passed overhead, people could tell which part of the day it was by noticing which mark on the circle the shadow fell across. These circles were called "sundials". Later, they were made of stone and metal to last longer.
Of course, a sundial did not work at night or on cloudy days, so men kept inventing(发明)other ways to keep trade of time. After glass blowing was invented, the hourglass came into use.
An hourglass is a glass container for measuring time n which sand moves slowly from the top half to the bottom in exactly one hour. The hourglass is turned over every hour so the sand could flow again.
One of the first clocks with a face and an hour hand was built for a king of France and placed in the tower of his palace. The clock did not show minutes or seconds. Since there were no planes or trains to catch, people were not worried about knowing the exact time. Gradually, clocks began to be popular and unusual. One clock was in the shape of a cart with a horse and driver. One of the wheels was the face of the clock.
Today, scientists have invented clocks that tell the correct time to a split second. Many electric clocks are often made with built-in radios, which can sometimes be set to turn on automatically (自动地). Thus, instead of an alarm(闹铃) ringing in your ear, you can hear soft music playing when it is time to get up. Some clocks will even start the coffee maker!
In what way was the hourglass better than the sundial?
选项
A、It could be used under any weather conditions.
B、It could be turned over and over again.
C、It was made of glass.
D、It could last longer.
答案
A
解析
推理题。由文章第二段第一句可知日晷在晚上或阴天时不起作用,所以后来人们发明了沙漏,可知沙漏可以在任何天气状况下使用。
转载请注明原文地址:https://kaotiyun.com/show/XfNd777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
ReadthetextsfromanarticleinwhichfivepeopletalkedabouttheInternetandmakinguseofit.Forquestions61to65,matc
Everyonechasessuccess,butnotallofUSwanttobefamous.SouthAfricanwriterJohnMaxwellCoetzeeiswell-knownforkeepin
It’sofficialthatmarriedpeoplearehealthier,oratleasttheythinktheyare.AnAmericansurveyof【C1】______100000people
ItwasfifteenpastnineasMariehurriedintotheofficebuildingwhereshewasgoingtowork.Herbushadinchedalongthrough
Onesummernight,onmywayhomefromworkIdecidedtoseeamovie.IknewthetheatrewouldbeairconditionedandIcouldn’tf
Playistheprincipalbusinessofchildhood,andmoreandmoreinrecentyearsresearchhasshownthegreatimportanceofplayi
Playistheprincipalbusinessofchildhood,andmoreandmoreinrecentyearsresearchhasshownthegreatimportanceofplayi
Withtheworld’spopulationestimatedtogrowfromsixtoninebillionby2050,researchers,businessesandgovernmentsarealr
Ican’tbelievethekindofrubbishthatsomepeoplecallart.Yesterday,mygirlfrienddraggedmetoamodernart【C6】______to
随机试题
人类历史上出现过的商品交换形式有()
对胸部纵隔淋巴结检出率最高的是
患者平素急躁易怒,失眠,头昏胀痛,面红目赤,大便秘结,小便黄,舌红苔黄,脉弦数。其病机是()
可用塑制法制备的丸剂有
测量学是采用科学方法测定地面上点的平面位置和高程,将地球表面的地形和其他信息测绘成图,以及将已设计的工程建筑或指定的界址标实在实地上的一门学科。房地产开发和建设管理中的测量工作主要分为()。
①学校放寒假②打电话③想念家人④人们开始欢度春节⑤决定留校
确定常数a,b,c,使得
计算(x+y2)dxdy,其中平面区域D由直线x=一2,x=2,y=0与曲线围成.
设A,B是两个随机事件,P(A|B)=0.4,P(B|A)=0.4,=0.7,则P(A+B)=__________。
ItisdifficultforanagencyasoldasJ.WalterThompson,whichwillmm140nextyear,torecordsomefirstsatsovenerablea
最新回复
(
0
)