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 Stone Age, the Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be
The Stone Age, the Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be
admin
2016-01-05
34
问题
The Stone Age, the Iron Age. Entire epochs have been named for materials. So what to call the decades ahead? The choice will be tough. Welcome to The Age of Superstuff. Material science—once the least sexy technology—is【C1】______with new, practical discoveries led by superconducting ceramics(超导陶瓷)that may revolutionize electronics. But superconductors are just part of the picture: from house and cars to cook pots and artificial teeth, the world will someday be made of different stuff. Exotic plastics, glass and ceramics will shape the future just as surely as have genetic engineering and computer science.
The key to the new materials is researchers’ increasing ability to【C2】______substances at the molecular level. Ceramics, for example, have long been limited by their brittleness. But by minimizing the microscopic【C3】______that cause it, scientists are making far stronger ceramics that still retain such qualities as hardness and heat resistance. Ford Motor Co. now uses ceramic tools to cut steel. A firm called Kyocera has created a line of ceramic scissors and knives that stay sharp for years and never rust or【C4】______
A similar【C5】______has overtaken plastics. High-strength polymers now form bridges, ice-skating rinks and helicopter rotors. And one new plastic that generates electricity when vibrated or pushed is used in electric guitars, touch sensors for robot hands and karate jackets(空手道外衣)that automatically record each punch and chop. Even plastic litter, which once threatened to【C6】______blot the landscape, has proved amenable to molecular tinkering. Several manufacturers now make biodegradable forms; some plastic six-pack rings for example, gradually decompose when exposed to sunlight. Researchers are developing ways to make plastics as【C7】______as metal or glass. Besides, composites—plastic reinforced with fibers of graphite or other compounds—made the round-the-world flight of the voyager possible and have even been proved in【C8】______: a helmet saved an infantryman’s life by deflecting two bullets in the Grenada invasion.
Some advanced materials are old standard with a new twist. The newest fiberoptic cable that carry telephone calls cross-country are made of glass so【C9】______that a piece of 100 miles thick is clearer than a standard window pane.
But new materials have no impact until they are made into products. And that transition could prove difficult, for switching requires【C10】______research and investment. It can be said a firmer handle on how to move to commercialization will determine the success or failure of a country in the near future.
A)lengthy I)transparent
B)transformation J)deliberately
C)absorption K)bestow
D)bursting L)imperfections
E)combat M)recyclable
F)permanently N)neutralization
G)appreciable O)corrode
H)manipulate
【C9】
选项
答案
I
解析
由空格后的a piece of 100 miles thick is clearer than a standardwindow pane“100英里厚的这种玻璃比一片标准的玻璃窗还要透明”可推知,该种玻璃的透明度很高,故I)transparent“透明的”为答案。
转载请注明原文地址:https://kaotiyun.com/show/pZQ7777K
0
大学英语六级
相关试题推荐
Newsisbadforyou—andgivingupreadingitwillmakeyouhappierA)Inthepastfewdecades,thefortunateamongushaverecogn
Angerisanemotionthatcanbedifficulttodealwith.Sometimesit’sexperiencedasafleeting【B1】______whileothertimesitc
AslongastheAmericanlandwasnotcompletelysettledandtheelementsof【B1】______orderwerenotyetimposedonthefrontier,
A、Every6years.B、Every2years.C、Every4years.D、Wheneveronedies.A
ApowerfulearthquakestruckanareanearthenortherncoastofChileonWednesday.Theearthquakecameadayafteranevenstro
IliveinthelandofDisney,Hollywoodandyear-roundsun.Youmaythinkpeopleinsuchaglamorous,fun-filledplacearehappi
A、Tomisverybusyinthesummer.B、Tomisverydiligent.C、HeisgoingtovisithisauntinFlorida.D、Hemayhavedifficultyw
HuaweihasmadeitsfirstequityinvestmentinaBritishtechnologycompanyastheChinesenetworkingandtelecommunicationsgro
Commonindoorplantsmayprovetobeavaluableweaponinthefightagainstrisinglevelsofindoorairpollution.Thoseplants
AfricanEconomicGrowthA)GoodnewsforAfrica,saytheexperts.Growthishealthyandbroad-based,fuelledinpartbyinfrastru
随机试题
H2受体阻断药对下列何种病疗效最好
下列关于砌体房屋抗震计算不正确论述是()。
保险公司除了一般企业共有的负债外,最主要的负债是( )。
对于在投诉反馈时限内无法拿出意见的客户投诉,下列银行个人理财业务人员的行为不妥当的是()。
商品流通企业是独立于生产领域之外,专门从事商品流通和流通()活动的经济组织。
下列起义和战役发生地在现安徽省六安市的有()。
某些经济学家是大学数学系的毕业生。因此,某些大学数学系的毕业生是对企业经营很有研究的人。以下哪项如果为真,能够保证上述论证的成立?
Researchonanimalintelligencealwaysmakesmewonderjusthowsmarthumansare.【C1】______thefruit-flyexperimentsdescribed
下列不属于结构化程序设计的结构是()。
Youwillheartwotelephoneconversations.Writedownonewordornumberineachofthenumberedspacesontheformsbelow.
最新回复
(
0
)