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
89
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
【C4】
选项
答案
O
解析
由and前的stay sharp for years可推知,空格处的动词与rust“生锈”意思相近,备选动词中的corrode“腐蚀;侵蚀”符合句意,故O)为答案。
转载请注明原文地址:https://kaotiyun.com/show/zpQ7777K
0
大学英语六级
相关试题推荐
A、Hewenttothelectureforanotherreason.B、Thelectureyesterdaywasnotinteresting.C、Heisinterestedinbehaviormodific
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
ApowerfulearthquakestruckanareanearthenortherncoastofChileonWednesday.Theearthquakecameadayafteranevenstro
Somuchhasthedebateoversugarenteredthemainstreamthatitisnolongerunusualtoheartwo"manly"men【B1】______storiesa
Somuchhasthedebateoversugarenteredthemainstreamthatitisnolongerunusualtoheartwo"manly"men【B1】______storiesa
Afterdecadesofstaringatapes,FransdeWaalhaswrittenabookaboutwhathumansseewhentheywatchchimpanzees.Thesecrea
CeaseFireinUkraineA)SeparatistleadersinUkraineagreedMondaytojoinagovernmentdeclaredceasefireasafirststeptow
CeaseFireinUkraineA)SeparatistleadersinUkraineagreedMondaytojoinagovernmentdeclaredceasefireasafirststeptow
Commonindoorplantsmayprovetobeavaluableweaponinthefightagainstrisinglevelsofindoorairpollution.Thoseplants
随机试题
冷藏库用水冲刷冷风机翅上的霜层时,应先关冷风机的供液阀,并视()压力的高低来调节回气阀的开启度。
新加入者进入行业的障碍主要有( )
患者,女性,35岁。下腰部酸痛伴乏力2年,入院进一步检查。该患者腰椎滑脱分度为
发生医疗事故时医疗机构要承担
实热腹痛证宜选方
A.乳房肿胀疼痛甚至呈搏动性,患处出现有压痛的肿块,表面皮肤红热,同时可有体温升高B.原发于大乳管内,渐移行至乳头,起初乳头刺痒、灼痛,接着出现湿疹样病变,乳头和乳晕的皮肤糜烂、潮湿,有时覆盖有黄褐色的鳞屑样痂皮C.乳房胀痛呈周期性,发生于月经前期,肿
下列哪项是阵发性室上性心动过速的主要发生机制()
股份报价转让与现有代办股份转让系统的股份转让和证券交易所市场股票交易的不同之处在于()。
“愈挫愈勇”、“吃一堑,长一智”、“失败是成功之母”这三句话给我们的启示是()。
有人用医院废弃瓶以及其他医疗废品做儿童玩具,作为当地执法人员。你怎么做?
最新回复
(
0
)