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
For thousands of years, people thought of glass as something beautiful to look at. Only recently have they come to think of it a
For thousands of years, people thought of glass as something beautiful to look at. Only recently have they come to think of it a
admin
2020-04-01
57
问题
For thousands of years, people thought of glass as something beautiful to look at. Only recently have they come to think of it as something to look through. Stores display their goods in large glass windows. Glass bottles and jars that hold food and drink allow us to see the contents. Glass is used to make eyeglasses, microscopes, telescopes, and many other extremely useful and necessary objects.
Until the Second World War, most of the glass used for optical instruments was imported from Europe. However, during the war Americans could not get European glass, and they were forced to make their own. As a result, new kinds of glasses were developed that had been previously unknown. These new effects were achieved by mixing other chemical elements with the sand. Some of these new glasses are very strong and can resist many kinds of shocks. Legend has it that a very hard glass was invented by a Roman who showed his discovery to the Emperor. When the Emperor saw the glass he feared that it would become more valuable than gold and silver, making his treasure worthless. Therefore, he had the glassmaker killed, and the secret was not discovered again for hundreds of years.
In the present century, safety glass was invented for use in modern cars and planes. Safety glass is made by placing a layer of plastic between two layers of plate glass. When the outside layer of glass is broken, the pieces do not scatter and injure people. Some glass of this type is strong enough to resist bullets.
Although in recent years plastics have replaced glass under conditions where glass might be easily broken, there are new uses being developed, for the greatest advantage of glass is that its component parts are inexpensive and can be found all over the world.
By telling the legend, the author wants to _____.
选项
A、prove that the Roman was the first inventor of hard glass
B、support that the Americans were as clever as the Romans
C、give some interesting information about hard glass
D、provide a historical event concerned with hard glass
答案
C
解析
推理判断题。本题考查例子与主题的关系。作者引用传说,只是为了使文章读起来更有趣。这是一个传说,不一定是真实的,因此,它不能被视为选项D所提及的历史事件,也不能证明是罗马人第一个发明坚固的玻璃,所以选项A也是不对的。选项B与本段内容无关,本段主要说明了美国人开发出新的玻璃制品的来由,并无说明美国人聪明之意。
转载请注明原文地址:https://kaotiyun.com/show/pDd7777K
0
大学英语四级
相关试题推荐
A、SunrisetimesacrossBritishtimezones.B、SunrisetimesacrossAmericantimezones.C、SunsettimesacrossBritishtimezones.
A、Becausepeoplearefreeinsummer.B、Becausethisisatraditionalfestival.C、Becausesummeristhetimeforoutdoormusicfe
A、Obtainsomeformofhealthinsurance.B、Preparesomelocalfood.C、OrderahotelontheInternet.D、Getlocalpeople’shelp.
A、Relatedofficialdepartmentsforbiditsmanagement.B、MostpeoplecomplainaboutitsIllegaloperation.C、Otherstorescompete
A、Itsautomaticmechanism.B、Itsmanufacturingprocess.C、Itswayofwakingpeopleup.D、Itsfunny-lookingpigface.C短文提到,在征求了多
A、Theyhavedestroyedseveralsmalltowns.B、TheywillsoonspreadtoSanFrancisco.C、Theyhaveinjuredmanyresidents.D、They
Weallknowthereexistsagreatvoid(空白)inthepubliceducationalsystemwhenitcomesto【C1】______toSTEM(Science,Technol
Weallknowthereexistsagreatvoid(空白)inthepubliceducationalsystemwhenitcomesto【C1】______toSTEM(Science,Technol
Weallknowthereexistsagreatvoid(空白)inthepubliceducationalsystemwhenitcomesto【C1】______toSTEM(Science,Technol
A、InWashington.B、InNewYork.C、InSanFrancisco.D、InPhiladelphia.D细节题。文中提到,1974年的第一次大陆会议(TheFirstContinentalCongress)是在t
随机试题
下列导致十二指肠溃疡胃酸分泌异常的因素中哪项不正确
滚轮架是借助焊件与主动滚轮间的摩擦力带动圆筒形焊件旋转地机械装置,主要用于回转体工件间的装配与焊接。
女性,11岁。上下前牙牙面自幼有白色斑块。口腔检查:上下前牙和第一磨牙牙面有边界明确的白垩色斑,其线纹与釉质的生长发育线相平行吻合。叩诊(-),探诊有带状缺陷,无松动。初步诊断为釉质发育不全。防治措施不合适的是
小儿厌食脾失健运证的治法是
主治医师张某被注销执业注册满1年,欲重新执业,遂向卫生行政部门递交了相关申请,但未批准。其原因是
位于曲线上的永久中线点,应在()各设一个;曲线中部,可根据通视条件适当增加。
根据外汇交易方式的不同,外汇交易可以分为即期外汇交易和远期外汇交易。下列关于即期外汇交易和远期外汇交易的说法正确的是()。
无民事行为能力人、限制民事行为能力人造成他人损害的,由监护人承担侵权责任。监护人尽到监护责任的,()。
下列做法符合因地制宜原则,有利于可持续发展的是:
OneofMicrosoft’scoolpeopleisPatrickBlackburn.AsatestmanagerfortheProductGroup,Blackburn’sjobmaysoundroutine;
最新回复
(
0
)