首页
登录
职称英语
The Stone Age, the Iron Age. Entire epochs have been named for materials. So
The Stone Age, the Iron Age. Entire epochs have been named for materials. So
游客
2024-04-17
50
管理
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 [br] 【C6】
选项
答案
F
解析
由空格所在的主句Even plastic litter has proved amenable tomolecular tinkering“即使是塑料垃圾也被证明可以接受分子熔补”可推知,空格所在的非限制性定语从句的句意为:曾被认为是能永久污染风景的(塑料垃圾)……故F)permanently“永久地”为答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3559626.html
相关试题推荐
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
TheStoneAge,theIronAge.Entireepochshavebeennamedformaterials.So
随机试题
Tomwasablackboy.【B1】hewasthreeyearsold,hesuddenly【B2】illoneevening.
Howdoesliterarystyleevolve?Surprisingly,(1)_____lieinwordswithseem
Abodyweighs______fromthesurfaceoftheearth.A、lessthefartheritgetsB、
关于出版社对社外校对的管理,说法错误的是( )。A.必须对社外校对人员进行岗前
中国共产党建立的第一个农村革命根据地是( )A.井冈山根据地 B.湘鄂赣根据
施工企业当机械事故发生后,操作人员应立即向单位领导和机械主管人员报告。
下列有关胎盘屏障的叙述,错误的是A.是胎盘绒毛与子宫血窦问的屏障 B.通透性与
具有筒箭毒碱样肌松作用的成分是A.厚朴酚B.β-桉叶醇C.木兰箭毒碱(厚朴碱)D
在()将经项目经理审查、企业审定、企业法人代表签发批准的施工组织设计报送业主和
性格的特征不包括() A.对现实的态度 B.意志特征 C.情绪特征 D.
最新回复
(
0
)