2016年華南理工大學(xué)研究生入學(xué)考試專業(yè)課真題626_英語綜合水平測試_第1頁
已閱讀1頁,還剩13頁未讀, 繼續(xù)免費閱讀

下載本文檔

版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進行舉報或認(rèn)領(lǐng)

文檔簡介

1、第1頁626華南理工大學(xué)2016年攻讀碩士學(xué)位研究生入學(xué)考試試卷(試卷上做答無效,請在答題紙上做答,試后本卷必須與答題紙一同交回)科目名稱:英語綜合水平測試適用專業(yè):英語語言文學(xué),外國語言學(xué)及應(yīng)用語言學(xué)共頁Part1ReadingComprehension(60marks2markseach)Directions:ReadthefollowingpassagesmakeONEchoicethatbestcompleteanswereac

2、hofthestatementsquestionsafterthepassages.Passage1Fallisstaggeringinrightonschedulewithitsbaggageofchillynightsspectacularheartstoppinglybeautifulleaves.PeoplewilltravelupdowntheEastCoastjusttostareatit–awholeseasonoflea

3、ves.WheredothecolscomefromSunlightrulesmostlivingthingswithitsgoldenedicts.Whenthedaysbegintoshtenatreereconsidersitsleaves.Allsummeritfeedsthemsotheycanprocesssunlightbutinthedogdaysofsummerthetreebeginspullingnutrients

4、backintoitstrunkrootsreducesgraduallychokesoffitsleaves.Adrylayerofcellsfmsattheleaves’slenderstemsthenscarsover.Undernourishedtheleavesstopproducingthepigmentchlophyllphotosynthesisceases.Animalscanmigratehibernatestefo

5、odtopreparefwinter.ButwherecanatreegoItsurvivesbypingitsleavesbytheendofautumnonlyafewfragilethreadsoffluidcarryingxylemholdleavestotheirstems.Aturningleafstayspartlygreenatfirstthenrevealsspotsofyellowredasthechlophyllg

6、raduallybreaksdown.Darkgreenseemstostaylongestintheveins.Duringthesummerchlophylldissolvesintheheatlightbutitisalsobeingsteadilyreplaced.Inthefallontheotherhnonewpigmentisproducedsowenoticetheothercolsthatwerealwaysthere

7、rightintheleafalthoughchlophyll’sshockinggreenhidthemfromview.Withtheircamouflagegoneweseethesecolsfthefirsttimeallyearbuttheywerealwaystherehiddenlikeavividsecretbeneaththehotglowinggreensofsummer.Anoddfeatureofthecolsi

8、sthattheydon’tseemtohaveanyspecialpurpose.Animalsflowerscolfareason–adaptationtotheirenvironment–butthereisnoadaptivereasonfleavestocolsobeautifullyinthefallanymethanthereisftheskyoceantobeblue.It’sjustoneofthehaphazardm

9、arvelstheplapresentseveryyear.Wefindthesizzlingcolsthrillinginasensetheycheatus.Coledlikeliving第3頁fossilfuelsiscentraltoourenergyeconomy.Vehiclescouldusehydrogeninavarietyofways.Someresearchersfavtheintroductionofelectri

10、ccarspoweredsolelybyfuelcellswhichcombinehydrogenoxygentoproduceelectricity.Otherssaythatconventionalcarenginescanbeconvertedtorunonhydrogenwithrelativelyminmodifications.Expertsarealsosplitoverwhetherasatemparysteptowar

11、dsafullhydrogeneconomyvehiclesshouldinitiallyuseonboardequipmenttoextracthydrogenfromfossilfuels.Infrastructureissuesplayabigroleinthedebateoverwhichapproachshouldbetaken.Thelackofanexistingsystemfstingdistributinghydrog

12、enpresentsadilemma.Carmanufacturersdonotwanttosellvehiclesthatpeoplecannotfuelenergycompaniesdonotwanttospendmoneydevelopingahydrogendistributioninfrastructurewhentherearenohydrogencarsontheroad.Theequationbecomesmecompl

13、icatedwithfuelcellsbecausetheyhaveyettobeproducedinlargenumberstheirlongtermreliabilityhasnotbeenproven.Thisdeadlockcouldbebrokenby“refmers”whichwouldallowhydrogencarstorunonfossilfuels.Refmerscanbreakdownthehydrocarbons

14、infossilfuelssoliberatehydrogen.Naturalgasfexamplecanberefmedbyheatingittogetherwithwateranickelbasedcatalyst.Theresultisaseriesofreactionswhoseproductsarecarbondioxidehydrogen.Otherfossilfuelsincludingpetrolgasolinecanb

15、erefmedinasimilarway.Hydrogencarsfittedwithrefmerswouldstillrunonpetrolbutwouldrefmitintohydrogen.Advocatesofthetechnologysaythatthiswouldgivecarcompaniestheconfidencetoproducethevehiclessoprovideafreshimpetusffuelcellde

16、velopment.SeveralcarmanufacturersincludingGeneralMotsDaimlerChryslerarenowwkingwithBallardPowerSystemsafuelcellproducerbasedinBurnabynearVancouvertodevelopvehiclesthatarepoweredbyfuelcellsfedbyrefmers.Butrefmersstillprod

17、ucecarbondioxidefmanyenvironmentaliststhisisenoughtorulethemout.Inadditionithastobetakenintoaccountthathydrogenvehicleswithrefmersarealsotechnologicallymecomplexcostlytobuildthanstraightfuelcellcars.6.Inthisarticlewhatis

溫馨提示

  • 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請與我們聯(lián)系,我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。

最新文檔

評論

0/150

提交評論