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2021山东考研英语阅读限时练习题(2)

2019-03-15 14:50:18|

山东中公教育加拿大28网站小编为了方便大家更好的备战2021山东考研政治,特为大家带来“2021山东考研英语阅读限时练习题(2)”希望大家能在平时多加温习,牢牢记住。预祝大家备考顺利!

数学 | 政治 | 英语专硕

 

加拿大28网站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 &ndash is bursting with new, practical discoveries led by superconducting ceramics 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.

加拿大28网站the key to the new materials is researchers‘ increasing ability to manipulate substances at the molecular level. ceramics, for example, have long been limited by their brittleness. but by minimizing the microscopic imperfections 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 corrode.

a similar transformation 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 that automatically record each punch and chop. even plastic litter, which once threatened to permanently 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 recyclable as metal or glass. besides, composites &ndash plastic reinforced with fibers of graphite or other compounds &ndash made the round-the-world flight of the voyager possible and have even been proved in combat: a helmet saved an infantryman‘s life by deflecting two bullets in the grenada invasion.

加拿大28网站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 transparent that a piece of 100 miles thick is clearer than a standard window pane.

加拿大28网站but new materials have no impact until they are made into products. and that transition could prove difficult, for switching requires lengthy 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.

1. how many new materials are mentioned in this passage?

[a] two

[b] three

[c] four

[d] five

2. why does the author mention genetic engineering and computer science?

[a] to compare them with the new materials.

[b] to show the significance of the new materials on the future world.

[c] to compare the new materials to them.

[d] to explain his view point.

3. why is transition difficult?

[a] because transition requires money and time.

加拿大28网站[b] because many manufacturers are unwilling to change their equipment.

加拿大28网站[c] because research on new materials is very difficult.

加拿大28网站[d]because it takes 10 years.

4. where lies success of a country in the new age of superstuff?

加拿大28网站[a] it lies in research.

[b] it lies in investment.

[c] it lies in innovation.

加拿大28网站[d] it lies in application

vocabulary

加拿大28网站1. superstuff chao jicailiao

2. superconducting ceramic chaodaotaoci

3. exotic shenqide

加拿大28网站4. shape suzao,chengxing

加拿大28网站5. brittleness cuixing

6. polymer juheti

加拿大28网站7. karate jacket kongshoudaowaiyi

加拿大28网站8. touch sensor chujichuanganqi

加拿大28网站9. each punch and chop meiyigeji、da

加拿大28网站10. blot dianwu,sunhaifengjingdedongxi

11. tinker xiubu,diaozheng

12. amendable fucongyu,zunxunde

加拿大28网站13. biodegradable nengshengwudijianfenjiede

加拿大28网站14. six-pack rings fangliugeguanzidehuanzhuangwu

15. decompose fenjie

16. recyclable kexunhuan(shiyongde)

17. infantryman bubing

18. deflect shipianxie,shizhuanxiang

加拿大28网站19. a new twist yigexindeguandian,fangfa

nanjuyizhu

1. material science &ndash once the least sexy technology &ndash is bursting with new, practical discoveries led by superconducting ceramics that may revolutionize electronics.

加拿大28网站【cankaoyiwen】cailiaokexue,yiducengshizuiwuxiyinli(zuibuqiyan)dejishu,zhengyizhanxinde ,yichaodaotaociweishoudezhongzhongshiyongxingfamingzhankaixinyan。zheizhongchaodaotaocikenenghuishidianzijishuchedigaibian。

2. some advanced materials are old standard with a new twist. the newest fiberoptic cables that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane.

加拿大28网站【cankaoyiwen】youxiegaojicailiaoshidaiyouxinfangfadelaobiaozhun。zuixinquanguodianhuadeguangxiandianlanyoubolizhicheng。zheizhongbolitoumingdujigao,yipian100yinglihoudebolibiyikuaibiaozhundechuangkuangbolihaiyaoqingxitouming。

xiezuofangfayuwenzhangdayi

zheishiyipianjieshao“chaodaocailiao”delunshuowen,caiyongyibandaojutidefenleixiezuoshoufa。xianzhichuweilaishidaidecailiaoshuyuchaodao,ranhouzaitichusanzhongchaodaocailiao,zaizhuyishuoming。

daanxiangjie

加拿大28网站1. b sanzhongchaodaocailiao。daanzaidiyiduanzuihouyiju“shenqidesuliao、bolihetaoci”。xiamiangeduanjutijiangzheisanzhongcailiao。dierduanjiangtaoci: “xincailiaozhiguanjianzaiyuyanjiugongzuozhebuduantigaozaifenzishuipingshangchuliwuzhidenengli。jutaociweili,youyutadecuixing,zhangqilaiyingyongfanweiyouxian。danshiguogaishandaozhicuixingdeweixiaoquexian,kexuejiazhizaochuyizhongbaochiyuanyouyingduhekangrexing,danjianshideduodetaoci”。disanduanjiangsuliao。“leisidezhuanzhefashengzaisuliaoshang,gaoqiangdudesuliaojianchengleqiaoliang、liubingchang、zhishengjideyelun。yizhongzhendonghuotuidongjiunengfadiandexinxingsuliaoyongyudianzijitashang,chujichuangansuliaoyongyujixieshouhekongshoudaowaiyishang,tanengzidongjilumeicijida。”houmiantanjisuliaolajikeyichuli,huozhezhizaokefenjiehaiyuandesuliaozhipin。suliaoneijiaruqitahuahewujiaqiangxingneng。disiduanjiangyouxiegaojicailiaoyouxindegaibian,zuixindeguangxiandianlanyoubolizhicheng,toumingdujigao,100yinglihoudeyikuaiqiqingxidubiyikuaiputongchuangbolihaigao。

2. b shuomingzheizhongxincailiaoduiweilaishijiedeyiyi。daanzaidiyiduan: “shenqidesuliao、bolihetaociyidinghuixiangshengwugongchenghejisuanjiyiyangjianggaibianshijie。”a. batamenhexincailiaoxiangbijiao,zheilibujinjinshibijiao,ershishuomingsanzhedoujutongyangdezuoyong––gaibianshijie。 c. baxincailiaobizuotamen。yebujinjinshibiyubini。 yuayiyangmeiyoushuodaozhongyaodian。d. shuomingtadeguandian。tailongtong。

3. a zhuanzhexuyaoqianheshijian。jianzuihouyiduan“keshixincailiaozhiyouzhichengchanpincaiyouyingxiang,erzheigezhuanzhekenenghenkunnan,yinweizhuanzhexuyaozhangqideyanjiuhetouzi。keyizheimeshuo,zaibujiudejianglai,genglaolaodizhangworuhebacailiaozhuanbianchengshangpinjiangjuedingyigeguojiazhichengbai。”b. yinweixuduozhizaoshangbuyuangaibiantamendeshebei。c. yinweixincailiaodeyanjiufeichangkunnan。 d. zhuanzheyaohuashangshinianshijian。zheisanxiangwenneimeiyousheji。

4. d zaichao jicailiaoshidaiyiguozhichenggongzaiyuyingyong。a. zaiyuyanjiu。b. zaiyutouzi。c. zaiyugexin。zheisanxiangdoushiyingyongdebufenqianti。qizhongahebwenneitidao,cxiangwenneiweisheji。

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