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2012职称英语理工类A真题及答案一、词汇选项： 1.Wealmost raninto aRolls-Roycethatpulledoutinfrontofuswithoutsignaling. A.overtook B.hit C.passedD.found 2.Heshiftedhispositionalittle,inorderto alleviate thepaininhisleg. A.control B.ease C.experienceD.suffer 3.Ouraimwasto update thehealthservice,andwesucceeded. A.offerB.provideC.fund D.modernize 4.Everyweekthemagazinepresentsthe profile ofawell-knownsportspersonality. A.description B.successC.evidenceD.plan 5.Alltheflatsinthebuildinghadthesame layout. A.colorB.sizeC.function D.arrangement 6.Newbornbabiescan discriminate betweenaman’sandawoman’svoice. A.treatB.express C.distinguish D.analyze 7.Theweatherwas crisp andclearandyoucouldseethemountainsfiftymilesaway. A.hotB.heavy C.fresh D.windy 8.Nothingwould induce metovoteforhimagain. A.teachB.help C.attract D.discourage 9.WhenIheardthenoiseinthenextroom,Icouldn’tresisthavea peep. A.chance B.look C.visitD.try 10.Hercommentsaboutmenare utterly ridiculous. A.slightlyB.partlyC.faintly D.completely 11.Hewas weary oftheconstantbattlebetweenthem. A.fondB.proud C.tired D.afraid 12.Shemovesfromone exotic locationtoanother. A.unusual B.familiarC.similarD.proper 13.Hehasbeengranted asylum inFrance. A.protection B.powerC.reliefD.license 14.Thephotographs evoked memoriesofour A.storedB.blockedC.erased D.refreshed 15.Thewallsaremadeofhollowconcreteblocks.A.empty B.bigC.longD.new二、阅读判断 Europa’swateryunderworld Europa,oneofJupiter’s63knownmoons,looksbrightandicyonthesurface.Butappearancescanbedeceiving:Mileswithinitscracked,frigidshell,Europaprobablyhidesgiantpoolsofliquidwater.Wherescientistsfindliquidwater,theyhopetofindlifeaswell. Sincewecan’tgodivingintoEuropa’sdepthsjustyet,scientistsinsteadhavetoinvestigatethemoon’ssurfaceforcluestowhatliesbeneath.Inanewstudy,scientistsinvestigatedonegroupofstrangeicepatternsonEuropaandconcludedthattheformationsmarkthetopofanundergroundpoolthatholdsasmuchwaterastheU.S.GreatLakes. PicturesofEuropa,whichisslightlysmallerthanEarth’smoon,clearlyshowatangled,icymishmashoflinesandcracksknownas“chaosterrains.”ThesechaoticplacescovermorethanhalfofEuropa.Formorethan10years,scientistshavewonderedwhatcausestheformations.Thenewstudysuggeststhattheyarisefromthemixingofvastundergroundstoresofliquidwaterwithicymaterialnearthesurface. ForscientistswhosuspectthatEuropaalsomaybehidinglifebeneathitsicysurface,thenewsaboutthenewlakeisexciting. “Itwouldbegreatiftheselakesharboredlife,”BritneySchmidt,aplanetaryscientistwhoworkedonthestudy,toldScienceNews.“Buteveniftheydidn’t,theysaythatEuropaisdoingsomethinginterestingandactiverightnow.” Schmidt,ascientistattheUniversityofTexasatAustin,andhercolleagueswantedtoknowhowchaosterrainsform.Sincetheycouldn’trockettoEuropatoseeforthemselves,theysearchedforsimilarformationshereonEarth.TheystudiedcollapsediceshelvesinAntarcticaandicycapsonvolcanoesinIceland.ThosefeaturesonEarthformedwhenliquidwatermixedwithice.ThescientistsnowsuspectsomethingsimilarmightbehappeningonEuropa:thataswaterandiceofdifferenttemperaturesmingleandshift,thesurfacefractures.Thiswouldexplainthejumbledicesculptures. “FracturingcatastrophicallydisruptstheiceinthesamewaythatitcausesiceshelvestocollapseonEarth,”SchmidttoldScienceNews.SheandherteamfoundthattheprocesscouldbecausingchaosterrainstoformquicklyonEuropa. Thenewstudysuggeststhatonthismoon,elementssuchasoxygenfromthesurfaceblendwiththedeepbodiesofwater.Thatmixturemaycreateanenvironmentthatsupportslife. 16.TheliquidwaterofanundergroundpoolofEuropaisestimatedxxxxxoftheUSGreatlakes. A.Right B.WrongC.Notmention 17.ThestrangeicepatternsonEuropaareformedasaresultofaxxxxxundergroundwaterpool. A.Right B.Wrong C.Notmention 18.EuropaisthemostrecentlydiscoveredoneamongJupiter’s A.RightB.Wrong C.Notmention 19.ThesizeofEuropaisabitlargerthanthatofEarth’smoon. A.Right B.Wrong C.Notmention 20.SchmidtandhercolleaguesarethefirstgroupofscientistsxxxxxEuropa. A.Right B.Wrong C.Notmention 21.TheformationsonEuropa’ssurfaceareratheruniqueinthe A.Right B.Wrong C.Notmention 22.Theexistenceofliquidwaterisanecessityforalife-supportA.Right B.WrongC.Notmention三、概括大意与完成句子 LearnaboutNobleGases(惰性气体) 1 Haveyoueverriddenonaballoon?Manytouristspotsofferballoonridesinorderforpeopletoseethebeautyofaplacefromabove.Aballooncontainsanoblegascalledhelium(氦).Formerly,balloonscontainedhydrogenbuthydrogenisveryflammableanddangerouswhenuncontrolled.Therefore,peopleshiftedtohelium,whichissafer.Heliumissafebecauseithasthepropertiesofthenoblegases. 2 Peopleoncebelievedthatnoblegasescouldn’tchemicallyreactatall.Forthisreason,theywerecalledinertgases(惰性气体).TheywerealsolistedunderGroup0intheoldperiodictablebecausescientistsbelievedthatthegaseshavezerovalence(价)electronsintheiroutershell.Thiswaslaterproventobeuntruewhensomenoblegascompoundswerediscovered. 3 Thegasesareelements,whichsharesimilarproperties.Thesepropertiesincludebeingmonoatomic,colorless,odorless,beingabletoconductelectricity,andhavinglowchemicalreactivity.NoblegasesincludeHelium,Neon,Argon,Krypton,XenonandRadon.TheseareallfoundinGroup18,intherightmostcolumnoftheperiodictable.Ifyoulookattheperiodictable,youwillnoticethattheseelementsaretheonlyones,whichdonothaveacharge.Heliumhasthelowestmolecular(分子的)weightwhileRadonistheheaviest. 4Rememberthatchemicalreactionsoccurbecauseatomshavevalenceelectrons,whichareelectronsintheiroutershell.Whentheoutershellis“unfilled”ortherequirednumberofelectronsisnotyetcomplete,theatomismorereactive.Noblegaseshaveafulloutershell,meaningthattheyhavecompleteelectronsintheiroutershell.Thiscompletenumbervaries.Forinstance,theoutershellofHeliumhas2valenceelectronswhiletheoutershellofXenonhas8electrons.Nowadays,thereremainstobeafewnoblegasesbecauseofthelowchemicalreactivityofthesesaidgases. A.whatistheperiodictable?B.Whatarenoblegases?C.Whatcausesthelowchemicalreactivityofnoblegases?D.Howwerenoblegasesdiscovered?E.Howwerenoblegasesunderstoodinthepast?F.whataretheapplicationsofnoblegases? 5becauseoftheirproperties,noblegaseshavemanyimportantapplications.Theyarewidelyusedinmedicineandindustries.Forinstance,liquidHeliumisusedforsuperconductingmagnets(磁体).Thesemagnetsareveryimportantinphysicsandmedicine.Whenadoctorsuspectsthataperson’sbrainhasbeendamaged,hemight requestforMagneticResonanceImaging(MRI).MRIallowsthedoctorto“see”thebrain,withoutoperatingonthepatient. 23.paragraph2_____ 24.paragraph3_____ 25.paragraph4_______ 26.paragraph5______ 27.Noblegasesarenotverychemically 28.AmongtheelementsofnoblegasesHeliumisthe 29.Therequirednumberofelectronsinnoblegases’outershellis 30.MRImaymakeoperatingonthepatient A.reactiveB.lightestC.importantD.completeE.flammableF.Unnecessary四、阅读理解 第一篇 GrossNationalHappiness Inthelastcentury,newtechnologyimprovedthelivesofmanypeopleinmanycountries.However,onecountryresistedthesechanges.HighintheHimalayanmountainsofAsia,thekingdomofBhutanremainedseparate.ItspeopleandBuddhist(佛教)culturehadnotbeenaffectedforalmostathousandyears.Bhutan,however,wasapoorcountry.Peoplediedatayoungage.Mostofitspeoplecouldnotread,andtheydidnotknowmuchabouttheoutsideworld.Then,in1972,anewrulernamedKingJigmeSingyeWangchuckdecidedtohelpBhutantobecomemodern,butwithoutlosingitstraditions. KingWangchucklookedatothercountriesforideas.HesawthatmostcountriesmeasuredtheirprogressbytheirGrossNationalProduct(GNP).TheGNPmeasuresproductsandmoney.Whenthenumberofproductssoldincreases,peoplesaythecountryismakingprogress.KingWangchuckhadadifferentideaforBhutan.Hewantedtomeasurehiscountry’sprogressbypeople’shappiness.Ifthepeople’shappinessincreased,thekingcouldsaythatBhutanwasmakingprogress.Todecideifpeoplewerehappier,hecreatedameasurecalledGrossNationalHappiness(GNH). GNHisbasedoncertainprinciplesthatcreatehappiness.Peoplearehappieriftheyhavehealthcare,education,andjobs.Theyarehappierwhentheyliveinahealthy,protectedenvironment.Theyarehappierwhentheycankeeptheir traditionalcultureandcustoms.Finally,peoplearehappierwhentheyhaveagood,stablegovernment. NowthereissomeevidenceofincreasedGNHinBhutan.Peoplearehealthierandarelivinglonger.Morepeopleareeducatedandemployed.Teenty-fivepercentofthelandhasbecomenationalparks,andthecountryhasalmostnopollution.TheBhutanesecontinuetoweartheirtraditionalclothingandfollowtheirancientBuddhistcustoms.Bhutanhasalsobecomeademocracy.In2008,KingWangchuckgavehispowertohisson.Althoughthecountrystillhadaking,ithelditsfirstdemocraticelectionsthatyear.Bhutanhadpoliticalpartiesandpoliticalcandidatesforthefirsttime.Finally,Bhutanhasconnectedtotherestoftheworldthroughtelevisionandinternet. Bhutanisasymbolforsocialprogress.ManycountriesarenowinterestedinBhutan’sGNH.Thesecountriesareinvestigatingtheirownwaystomeasurehappiness.Theywanttocreatenewpoliciesthattakecareoftheirpeople,cultures,andland. BrazilmaybethenestcountrytousetheprinciplesofGNH.BrazilianleadersseetheprinciplesofGNHasasourceofinspiration.Brazilisalargecountrywithadiversepopulation.IfhappinessworksasameasureofprogressinBrazil,perhapstherestoftheworldwillfollow.31.WhowasJigmeSingyeWangchuck? A.Apresident. B.ABuddhistpriest. C.Aking. D.Ageneral. 32.ApartfrommodernizingBhutan,whatelsedidWangchuckwanttodoforBhutan? A.Tomakeitspopulationgrow. B.Tokeepitseparatefromtheworld. C.Tokeepitstraditionsandcustoms. D.Toencourageitspeopletogetrich. 33.AcountryshowsitsprogresswithGNPby A.sellingmoreproducts. B.spendingmoremoney. C.spendinglessmoney. D.providingmorejobs. 34.AccordingtoGNH,peoplearehappierifthey A.havenewtechnology. B.haveagood,stablegovernment. C.canchangetheirreligion. D.havemoremoney. 35.Todaymanycountriesare A.usingtheprinciplesofGNHtomeasuretheirprogress. B.workingtogethertodevelopacommonscaletomeasureGNH. C.takingbothBhutanandBrazilassymbolsforsocialprogress.D.tryingtofindtheirownwaystomeasurehappiness.第二篇 DownloadKnowledgeDirectlytoYourBrain Forthefirsttime,researchershavebeenabletohackintotheprocessoflearninginthebrain,usinginducedbrainpatternstocreatealearnedbehavior.It’snotquiteasadvancedasaninstantkung-fudownload,andit’snotassleekascognitiveinception,butit’sstillanimportantfindingthatcouldleadtonewteachingandrehabilitationtechniques. Futuretherapiescoulddecodethebrainactivitypatternsofanathleteoramusician,andusethemasabenchmarkforteachinganotherpersonanewactivity,accordingtotheresearchers. ScientistsfromBostonUniversityandATRComputationalNeuroscienceLaboratoriesinKyotousedfunctionalmagneticresonanceimaging,orfMRI,tostudythelearningprocess.Theywereexaminingtheadultbrain’saptitudeforvisualperceptuallearning,orVPL,inwhichrepetitivetrainingimprovesaperson’sperformanceonaparticulartask.Whetheradultscandothisaswellasyoungpeoplehasbeenanongoingdebateinneuroscience. LedbyBUneuroscientistTakeoWatanabe,researchersusedamethodcalleddecodedfMRIneurofeedbacktostimulatethevisualcortex.Firsttheyshowedparticipantscirclesatdifferentorientations.ThentheyusedfMRItowatchtheparticipants’brainactivity.Theresearcherswerethenabletotraintheparticipantstorecreatethisvisualcortexactivity. ThevolunteerswereagainplacedinMRImachinesandaskedtovisualizeshapesofcertaincolors.Theparticipantswereaskedto“somehowregulateactivityintheposteriorpartofthebrain”tomakeasolidgreendiscaslargeastheycould.Theyweretoldtheywouldgetapaidbonusproportionaltothesizeofthisdisc,buttheyweren’ttoldanythingaboutwhatthediscmeant.Theresearcherswatchedtheparticipants’brainactivityandmonitoredtheactivationpatternsintheirvisualcortices. “Participantscanbetrainedtocontroltheoverallmeanactivationofanentirebrainregion,”thestudyauthorswrite,“ortheactivationinoneregionrelativetothatinanotherregion.” Thisworkedevenwhentestsubjectswerenotawareofwhattheywerelearning,theresearcherssaid. “Themostsurprisingthinginthisstudyisthatmereinductionsofneuralactivationpatternscorrespondingtoaspecificvisualfeatureledtovisualperformanceimprovementonthevisualfeature,withoutpresentingthefeatureorsubjects'awarenessofwhatwastobelearned,”Watanabesaidinastatement. Watanabeandcolleaguessaidthismethodcanbeapowerfultool. “Itcan‘incept’apersontoacquirenewlearning,skills,ormemory,orpossiblytorestoreskillsorknowledgethathasbeendamagedthroughaccident,disease,oraging,withoutaperson’sawarenessofwhatislearnedormemorized,”theywrite.36.whathaveresearchersbeenabletodowiththehelpofthestudy? A.Discoveraperson’slearningprocessinthebrain. B.Makeapersonknowhowtodosomethingwithoutlearning. C.Setupdifferentlearningpatternsfordifferentpeople. D.Enablepeopletolearnkungfuinstantly. 37.whathelpsapersontodoaparticulartaskbetterinvisualperceptuallearning? A.Testing B.Encouragement C.Self-assessment D.Repetition 38.whichofthefollowingstatementsistrueoftheexperimentparticipants? A.TheylearnedhowtocontrolMRLmachinesintheexperiment B.Theywerenottoldwhattobelearnedintheexperiment C.Theywerepaidtotakepartintheexperiment D.Theywerenotcooperativeintheexperiment 39.thefindingofthestudyismostsignificantinthatlearning A.isfulloffun B.isvisualized C.happensunconsciously D.becomesunnecessary 40.whoaremostlikelytobenefitfromthestudy? A.Teenagers B.Musicians C.SeniorpeopleD.Athletes第三篇 SmallButWise OnDecember14,NASA1blastedasmallbutmightytelescopeintospace.ThetelescopeiscalledWISEandisaboutaswidearoundasatrashcan.Don'tletitssmallsizefoolyou:WISEhasapowerfuldigitalcamera,anditwillbetakingpicturesofsomethewildestobjects2intheknownuniverse,includingasteroids,faintstars,blazinggalaxies3andgiantcloudsofdustwhereplanetsandstarsareborn. “I'mveryexcitedbecausewe'regoingtobeseeingpartsoftheuniversethatwehaven'tseenbefore,”saidNedWright,ascientistwhodirectstheWISEproject. Sincearrivinginspace,theWISEtelescopehasbeencirclingtheEarth,heldbygravityinapolarorbit4(thismeansitcrossesclosetothenorthandsouthpoleswitheachlap5).Itscameraispointedoutward,awayfromtheEarth,andWISEwillsnapapictureofadifferentpartoftheskyevery11minutes.Aftersixmonthsitwillhavetakenpicturesacrosstheentiresky. ThepicturestakenbyWISEwon'tbelikeeverydaydigitalphotographs,however.WISEstandsfor“Wide-fieldInfraredSurveyExplorer.”Asitsnamesuggests,theWISEcameratakespicturesoffeaturesthatgiveoffinfraredradiation6. Radiationisenergythattravelsasawave.Visiblelight,includingthefamiliarspectrumoflight7thatbecomesvisibleinarainbow,isanexampleofradiation.Whenanordinarydigitalcameratakesapictureofatree,forexample,itreceivesthewavesofvisiblelightthatarereflectedoffthetree.Whenthesewavesenterthecamerathroughthelens,they'reprocessedbythecamera,whichthenputstheimagetogether. Wavesofinfraredradiationarelongerthanwavesofvisiblelight,soordinarydigitalcamerasdon'tseethem,andneitherdotheeyesofhumanbeings.Althoughinvisibletotheeye,longerinfraredradiationcanbedetectedaswarmthbytheskin. That'sakeyideatowhyWISEwillbeabletoseethingsothertelescopescan't.Noteverythingintheuniverseshowsupinvisiblelight.Asteroids,forexample,aregiantrocksthatfloatthroughspace—buttheyabsorbmostofthelightthatreachesthem.Theydon'treflectlight,sothey'redifficulttosee.Buttheydogiveoffinfraredradiation,soaninfraredtelescopelikeWISEwillbeabletoproduceimagesofthem.DuringitsmissionWISEwilltakepicturesofhundredsofthousandsofasteroids. Browndwarfs8areanotherkindofdeep-spaceobjectthatwillshowupinWISE'spictures.Theseobjectsare“failed”stars—whichmeanstheyarenotmassiveenoughtojumpstart9thesamekindofreactionsthatpowerstarssuchasthesun.Instead,browndwarfssimplyshrinkandcooldown.They'resodimthatthey'realmostimpossibletoseewithvisiblelight,butintheinfraredspectrumtheyglow.41.WhatissospecialaboutWISE? AItisassmallasatrashcan. BItissmallinsizebutcarriesalargecamera. CItsdigitalcameracanhelpastronomerstoseetheunknownspace. DNeverbeforehasatelescopecarriedadigitalcamerainspace. 42.ThecameraonWISE Aisequippedwithexpensivecomputers. Bproducesimagesofobjectsgivingoffinfraredradiation. Creflectslightvisibletothehumaneyes. Dissimilartoanordinarydigitalcamera. 43.Itistruethatinfraredradiation. Aisnotdetectabletohumans. Blooksbrighterthanvisiblelight. Cisvisiblelightreflectedoffanobject. Dhaslongerwavesthanthoseofvisiblelight. 44.WhichofthefollowingstatementsaboutasteroidsisNOTture? ATheWISEtelescopecancatchandtakepicturesofthem. BTheydonotreflectlightthatreachesthem. CTheyfloatthroughspacegivingoffvisiblelight. DTheyareinvisibletoordinarycameras. 45.Itcanbeinferredfromthelastparagraphthatbrowndwarfs. Agiveoffinfraredradiation. Barepowerstarslikethesun. CbecomemassiveandactiveDareinvisibletotheWISEtelescope.五、补全短文 TheMysteriesofNazca InthedesertofPeru,300kilometersfromLima,oneofthemostunusualartworksintheworldhasmystified(迷惑)peoplefordecades.__________(46)Butfromhighabove,thesemarksarehugeimagesofbirds,fish,seashells,allbeautifullycarvedintotheearth. TheNazcalinesaresodifficulttoseefromthegroundthattheyweren’tdiscovereduntilthe1930s,whenpilotsspottedthemwhileflyingoverthearea.Inall,thereareabout70differenthumanandanimalfiguresontheplain,alongwith900triangles,circles,andlines. Researchershavefiguredoutthatthelinesareatleast1,500yearsold,buttheirpurposeisstillamystery.___________(47)However,itwouldprobablybeverytrickytoxxxxxandaspaceshipinthemiddleofpicturesofdogsandmonkeys. Inthe1940s,anAmericanexplorernamedPaulKosoksuggestedthatthedrawingsareachronicle(记录)ofthemovementofthestarsandplanets.__________ (48)xxxxxanastronomertestedhistheorywithacomputer,buthecouldn’tfindanyrelationbetweenthelinesandmovementsinspace. Anotherexplanationisthatthelinesmayhavebeenmadeforreligiousreasons.xxxxxresearcherTonyMorrisoninvestigatedthecustomsofpeopleintheAndesxxxxxandlearnedthattheysometimespraybythesideoftheroad.It’spossiblethatxxxxx,thelinesofNazcawerecreatedforasimilarpurpose.__________ (49)Butxxxxxpeoplehaveneverconstructedanythingthisbig. Recently,twootherscientists,DavidJohnsonandSteveMabee,havespeculatedxxxxxlinescouldhavebeenrelatedtowater.Nazcaisoneofthedriestplacesinthexxxxxreceivesonly2cmofraineveryyear.WhileJohnsonwassearchingforxxxxxwatersourcesinthearea,henoticedthatsomewaterwaysbuiltancientxxxxxwereconnectedwiththelines.JohnsonbelievesthattheNazcalinesareagiantxxxxxundergroundwaterinthearea.________(50) A..Scholarsdifferininterpretingthepurposeofthedesigns. B.Thelargestpicturemayhavebeenthesitesforspecialceremonies. C.HecalledNazca“thelargestastronomybookintheworld” D.ASwisswriternamedErichvonDanikenwrotethattheNazcalinesweredesignedasalandingplaceforUFOs. E.Otherscientistsarenowsearchingforevidencetoprovethis.F.Seenfromtheground,itlookslikelinesscratchedintotheearth.六、完型填空 SolarPowerwithoutSolarCells AdramaticandsurprisingmagneticeffectoflightdiscoveredbyUniversityofMichigan1researcherscouldleadtosolarpowerwithouttraditionalsemiconductor-basedsolarcells. Theresearchersfoundawaytomakean“optical51,”saidStephenRand,aprofessorinthedepartmentsofElectricalEngineeringandComputerScience,PhysicsandAppliedPhysics. Lighthaselectricandmagnetic52.Untilnow,scientiststhoughttheeffectofthemagneticfieldweresoweakthattheycouldbe53.WhatRandandhiscolleaguesfoundisthatattherightintensity,whenlightistravelingthroughamaterialthatdoesnot54electricity,thelightfieldcangeneratemagneticeffectsthatare100milliontimesstrongerthanpreviouslyexpected.Underthesecircumstances,themagneticeffectsdevelopstrength55toastrongelectriceffect. “Thiscouldleadtoanewkindofsolarcellwithoutsemiconductorsandwithoutabsorptiontoproducechargeseparation,”Randsaid.“Insolarcells,the56goesintoamaterial,getsabsorbedandcreatesheat.Here,weexpecttohaveaverylowheatload2.Insteadofthelightbeingabsorbed,energyisstoredinthemagneticmoment3.Intensemagnetizationcanbeinducedbyintenselightandthenitisultimatelycapableofprovidingacapacitivepower57Whatmakesthispossibleisapreviouslyundetectedbrandof“opticalrectification,”saysWilliamFisher,adoctoralstudentinappliedphysics.Intraditionalopticalrectification,light'selectricfieldcausesachargeseparation,orapulling58ofthepositiveandnegativechargesinamaterial.Thissetsupavoltage,similarto59inabattery. RandandFisherfoundthatundertherightcircumstancesandinrighttypesofmaterials,thelight'smagneticfieldcanalsocreateopticalrectification.Thelightmustbeshonethrougha60thatdoesnotconductelectricity,suchasglass.Anditmustbefocusedtoanintensityof10millionwattspersquarecentimeter8.Sunlightisn'tthis61onitsown,butnewmaterialsarebeingsoughtthatwouldworkatlowerintensities,Fishersaid. “Inourmostrecentpaper,weshowthatincoherentlight9likesunlightistheoreticallyalmost62effectiveinproducingchargeseparationaslaserlightis,”Fishersaid. Thisnew63couldmakesolarpowercheaper,theresearcherssay.Theypredictthatwithimprovedmaterialstheycouldachieve10percentefficiencyinconvertingsolarpowertouseableenergy.That'sequivalenttotoday'scommercial-gradesolarcells. “Tomanufacturemodemsolarcells,youhavetodo64semiconductorprocessing,”Fishersaid.“Allwewouldneedarelensestofocusthelightandafibertoguideit.Glassworksfor65.It'salreadymadeinbulk,anditdoesn'trequireasmuchprocessing.Transparentceramicsmightbeevenbetter.”51.A.discB.fiberC.instrument D.battery 52.A.applications B.components C.resourcesD.differences 53.A.concerned B.ignored C.expectedD.noticed 54. A.conduct B.produceC.useD.consume 55.A.reactiveB.preferableC.due D.equivalent 56. A.light B.electricityC.chemicalD.gas 57.A.plant B.source C.equipmentD.line 58.A.upB.down C.apart D.together 59.A.thisB.those C.that D.these 60. A.material B.deviceC.detectorD.meter61.A.brightB.faintC.visible D.intense62.A.more B.as C.muchD.such 63.A.skill B.technology C.miracleD.prototype 64. A.extensive B.interactiveC.selectiveD.intensive65.A.allB.someC.others D.both答案一、BBDADCCCBDCAADA 二、ABCBBBA三、EBCFABDF四、CCABDADBBC CBDCA 五、FDCBE六、DBBADABCCADBBAD
