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
43
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] 【C6】
选项
答案
F
解析
本句句子结构完整,因此应填入一个副词修饰blot。空格所在句为非限制性定语从句,句意为:曾被认为是能——污染风景。一般塑料垃圾难以降解,造成的污染几乎是永久性的,故[F]permanently“永久地”为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3130608.html
相关试题推荐
PASSAGETHREE[br]Howdotheoptimistsexplainproductivityfall?It’salengthy
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
MemoTo:Peter,DeputyEditorFrom:DanielThoma
Doyoumind___________________(推迟这次会议到本季度末)?postponingsuchaconferencetot
Humble______itmaybe,there’snoplacelikehome,______hemaygo.A、like;wh
关于职位分析的作用,说法错误的是( )A.有助于评价职位在组织中的相对价值,但
库泊(Cooper)等人的“心理旋转”实验说明了表象的哪个特征?()A.直观
某软件项目的《需求规格说明书》第一次正式发布时,版本号为V1.0,此后,由于发现
某混凝土强度等级为C25,其所用细骨料中含泥量宜小于()。A.1% B.
由杨丽萍编导并领衔主演的大型原生态歌舞集《云南映象》全球公演计划启动。该歌舞集海
保险是一种()的行为。 A.自助 B.他助 C.自助与他助相结合
能够消除日常价格运动中偶然因素引起的不规则性的图形是()。A:K线圈 B:
最新回复
(
0
)