首页
登录
职称英语
[A]lengthy[I]transparent [B]transformation[J]deliberately [C]absorpt
[A]lengthy[I]transparent [B]transformation[J]deliberately [C]absorpt
游客
2023-10-26
55
管理
问题
[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
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. [br] 【C1】
选项
答案
D
解析
根据句子结构可知,空格处缺少动词,且应为进行时态。该句句意为:以前最不引人注意的材料科学,随着一些以超导陶瓷为首的新的、实用性的发现而______起来。备选动词中的bursting“突然出现,突然活跃起来”符合句意,故[D]为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3130603.html
相关试题推荐
A.arisesB.biasC.characteristicD.convictedE.deliberately
A.arisesB.biasC.characteristicD.convictedE.deliberately
A.arisesB.biasC.characteristicD.convictedE.deliberately
A.arisesB.biasC.characteristicD.convictedE.deliberately
A.arisesB.biasC.characteristicD.convictedE.deliberately
A.digB.avoidsC.deliberatelyD.rememberingE.judgingF.eventG.f
A.digB.avoidsC.deliberatelyD.rememberingE.judgingF.eventG.f
A.digB.avoidsC.deliberatelyD.rememberingE.judgingF.eventG.f
A.digB.avoidsC.deliberatelyD.rememberingE.judgingF.eventG.f
A.digB.avoidsC.deliberatelyD.rememberingE.judgingF.eventG.f
随机试题
Iswinter’sgrayweatherbringingyou______?CheerupbecauseherecomesourChr
Inthedevelopingnations,thetechnologyhasthecapacitytoreachteachersin
______thepractice,thebestruleistheonethatworks.A、AsregardsB、Asregar
[originaltext]M:I’dliketoopenasavingsaccount,please.W:Allright,ple
初中体育《原地侧手推实心球》主要教学过程 (一)开始部分 课堂常规:1.体委整队,报告人数;2.师生问好;3.教师宣布本节课的内容,同时说明教学要达到的目标
统一战线作为新民主主义革命胜利的基本经验之一,其主要内容是什么?
A.促胃液素瘤 B.甲状腺功能亢进 C.小肠吸收不良综合征 D.服盐类泻药
某化学教师在一次化学测验中设计了下列试题。并对部分学生的考试结果进行了统计和分析
急性弥散性血管内凝血高凝期应及时应用A:肝素 B:卡巴克洛 C:6-氨基己酸
可在6~8km距离内不使用中继器实现高速率数据传输,电磁绝缘性良好,衰减小,频带
最新回复
(
0
)