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
The Compass The great sea voyages of Europe’s "Age of Discovery," such as Christopher Columbus’s trip to the West Indies in 149
The Compass The great sea voyages of Europe’s "Age of Discovery," such as Christopher Columbus’s trip to the West Indies in 149
admin
2009-06-15
55
问题
The Compass
The great sea voyages of Europe’s "Age of Discovery," such as Christopher Columbus’s trip to the West Indies in 1492, would have been impossible without the use of a compass. This great device for sea voyages was introduced to the West from China during the thirteenth century A.D. We have to thank ancient Chinese for their invention of the compass.
Two thousand years ago the Chinese had already developed a working compass. A piece of lodestone (天然磁石) would be cut into the shape of a ladle (长柄勺). Placed on a stone board with a smooth surface, the lodestone would move round until the "handle" of the ladle pointed south while the bulk (主体) of the ladle was attracted to magnetic north. This interestingly shaped device is mentioned in a book from about A.D. 80. Other ancient books may have dated it as far back as the fourth century B.C. Jade (玉石) finders played an important role in the invention of the "ladle". They travelled great distances to look for jade. in order not to lose directions, they would take a "ladle" with them.
The jade connection is important. Lodestone is a hard material—though not as hard as some jade. And the making of a magnetic "ladle", as well as a highly smooth stone board, would have required great skill. This suggests that the compass was invented by the jade finders of ancient China.
However, the making of a "ladle" was a tough job. Much work needed to shape a piece of lodestone into a ladle would mean much of its natural magnetism (磁性) had been lost. This again meant that only a few "ladles" could have been produced. Small numbers of ladies produced and growing need for navigation led to a search for ways to produce more compasses, and at the same time, smaller and better compasses.
选项
A、Columbus was a great sailor and discoverer.
B、The compass was invented by Columbus.
C、The invention of the compass is important in human history.
D、Columbus introduced the compass to the West Indies.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/OzQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
TheDevelopmentofBalletBalletisadanceformthathasalonghistory.Thefactthatitsurvivestothisdayshowsthati
HowtoArguewithYourBoss1.Beforeyouarguewithyourboss,checkwiththeboss’ssecretarytodeterminehismood.Ifhe
TheweatherisaconstantsubjectofconversationinBritain.
FemaleBullfightingItwasaunique,eye-catchingsight:anattractive,womaninashinybullfighter’ssuit,swordinhand,
HowtoDoWellinExamsDonotunderestimatethepowerofrevisioninthedaysandhoursbeforeanexamination.Thecloseryo
InitiallythewriterdidnotwanttobuyahearingaidbecauseOnespecialfeatureofCrystalEaristhat
A.alonglifeexpectancyformostpeopleB.artistsareadroitindealingwiththeirpaintingsubjectC.engageinthemedica
Manymillionsofpeoplehavehighbloodpressure(hypertension高血压).What’ssofrighteningaboutthissocalledsilentkilleris
Organicfood:Why?1.Europeisnowthebiggestmarketfororganicfoodintheworld,expandingby25percentayearoverth
WorldHeartDaySundaywasWorldHeartDay.TheWorldHeartFederationanditsmembergroupsinmorethanonehundredcountri
随机试题
下列选项中,存在不当得利的是()
新生男婴,因“生后6小时内呕吐4次”入院诊治。出生后30分钟后即开始呕吐,尚未开奶。呕吐物为黏液及咖啡色样液体,伴肢端发冷、发花。查体:体温352~C,呼吸60次/min,心率165次/min,反应差,有呻吟,面色苍白,腰骶部皮肤有散在皮下出血点。双肺呼吸
孙某,男,癫痫病史5年,曾有强直阵挛发作。其最适宜的职业是( )。【历年考试真题】
根据测绘项目组织实施要求,项目目标控制的核心是()。
某工业企业2016年度主营业务收入为3000万元,营业成本为2500万元,其他业务收入为20万元,其他业务成本为10万元,投资收益为20万元(其中包括国债利息收入8万元),营业外支出为10万元(其中包括行政罚款支出5万元),所得税税率为25%。假定不考虑其
从网络高层协议角度看,攻击方法可以概括为:______与非服务攻击。
计算机指令主要存放在()。
冯·诺依曼(VonNeumann)型体系结构的计算机硬件系统的五大部件是()。
Humanbeingsinalltimesandplacesthinkabouttheirworldandwonderattheirplaceinit.Humansarethoughtfulandcreative
A、Itisinthecenterofthecampus.B、Itshouldhaveamapofthecity.C、Ithasinformationaboutsummercamps.D、Itprobably
最新回复
(
0
)