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2021-2022年安徽省阜陽市公共英語五級(筆試)真題一卷(含答案)學(xué)校:________班級:________姓名:________考號:________
一、1.ListeningComprehension(15題)1.Dr.WilsonsuggeststhatWangshouldextendhisstayattheuniversity.
A.TrueB.Fasle
2.WhyareAmericanstudentsusuallyunderpressureofwork?
A.Becausetheiracademicperformancewillaffecttheirfuturecareerinthefuture.
B.Becausetheyareheavilyinvolvedinstudentaffairs.
C.Becausetheyhavetoobservetheuniversitydiscipline.
D.Becausetheywanttorunforpositionsofauthority.
3.聽力原文:Todayit'smyturntogivetheweeklyoralpresentation,andthetopicthatProfessorMayhadassignedtomeis"thelifeofthepoet,EmilyDickinson".ComparedwithWaltWhitmanwhomwediscussedlastweek,IfoundEmilyDickinsonstrikinglydifferent.SheseemedinfacttobethecompleteoppositeofWhitmaninherlifeandinherwork.Iwouldliketosharebrieflywiththeclasssomeoftheessentialfactsofherbiography.EmilyDickinsonwasbornin1830inAmherst,Mass,barelyadecadeafterWhitman.Inherearly20'sforreasonswhichstillremainamysteryshebegantowithdrawfromherordinarycontactwiththeworld.Fortheremaining30yearsofherlifeshewasseldomseenoutsideherhome.InthisrespectshewasquiteunlikeWhitmanwholovedthegreatoutdoors.EmilyDickinsonspenthersolitarydayscorrespondingwithherfriendsandwritinghundredsofremarkablepoems,notably"Iheardaflybuzz"andthepoemwehavereadfortoday"I'mnobody".Althoughsheshowednoneofherpoemstoherfamilyandsentsomeofherletterstofriends,onlyfourwerepublishedinherlifetime.Mostofthem,almost1,200poemswerediscoveredinherroomaftershediedin1886.attheageof56.Thesepoemshaveestablishedherasamajorpoet,andseveralmodemcriticsconsiderherthegreatestwomanpoetintheEnglishlanguage.Eh,that'saboutallIhave.Isthereanyquestion?Ifnot,weshouldprobablybegintalkingaboutDickinson's"I'mnobody",thepoemProfessorMayassignedforthisweek'sclassdiscussion.
Whoisthespeaker?
A.Apoet.B.Ateacher.C.Astudent.D.Anartist.
4.Chainsdon'tproducetheirowncoursebookmaterial.
A.TrueB.Fasle
5.MrMillerenjoysdoingthingswithhisownhands.
A.RightB.Wrong
6.Wangintendstostudyhowcomputerisusedforlanguagetranslation.
A.RightB.Wrong
7.ThejoboftheBoardofDirectorsistoadministratethecompany.
A.RightB.Wrong
8.聽力原文:TheUniedStatesofAmericaisafoundingmemberoftheInternationalFootballAssociation.In1913theAmericanFootballAssociationwasfoundedwithover7,000registeredclubsand1.4millionplayers.
InhistorytheU.S.teamenteredthefinalsoftheWorldCupfourtimesandgaineddiethirdplaceinthefirstWorldCup.Butsincethe4thWorldCupUSAhaspaidmoreattentiontotheOlympicGamesandAmericanfootball.
TheheadcoachoftheU.S.teamnowisfromYugoslavia,the57-year-oldcoachmovedtoMexicotwenty-oneyearsagoandlaterhebecametheheadcoachofMexico'sNationalTeam.Afterthatheleftforanevensmallercountry,CostaRica.Beforelong,hebecamewell-knownallovertheworld.
OnMarch7th,1991,hefacedthebiggestchallengeinallhislifetoleadtheU.S.team.TheAmericanFootballAssociationspentayearbuildingafootballfieldinCaliforniaforhim.Andintwoyears'timehisteamdefeatedtheteamsofIreland,EnglandandPortugal.
ThustheU.S.teamenteredwitheaseintothefinalsoftheWorldCup.Andasthehost,itenteredautomaticallyintothefirstcirclein1994.
WhenwastheAmericanFootballAssociationfounded?
A.In1913.B.In1930.C.In1914.D.In1917.
9.PeopleinRussiaarealsofamousfortheirlongevity.
A.TrueB.Fasle
10.What'stheCivilRightsMovementfor?
11.Behavioralmanagementisveryusefulbutisnot______likescientificmanagement.
12.PartA
Directions:Youwillhearatalk.Asyoulisten,answerQuestions1-10bycirclingTRUEorFALSE.YouwillhearthetalkONLYONCE.Younowhave1minutetoreadQuestions1-10.
聽力原文:W:Comein,please.
M:Goodmorning,Dr.Wilson.
W:Goodmorning,Wang.Hownicetomeetyouagain.Takeaseat...whydon'tyou,please.Whendidyougettotheuniversity?
M:Iarrivedyesterday.
W:Well...areyoulivinginthecollege?
M:No,IamwithanEnglishfamily...actually...becauseIwanttoimprovemyspeaking.
W:Oh,fine.Right,didyoutakealanguageproficiencytestbeforeyoucame?
M:Yes.Uhh...myOverallBandis6,but...unfortunatelymyspeakingscoreisonly5.
W:OK,youknow,hereinthisuniversity,youhavetotakeourownEnglishtestbeforeyouattendanylectures.So,firstofall,whatwe'vegottodois,wehavetomakeanarrangementforthetestdate.Umm...willtomorrowbeallrightforyou?
M:Yeah,Ihavetimetomorrowmorning.
W:Good,then.Tomorrowatten.Idon'tthinkthetestwillbeanyproblemforyou.Now,let'smakesureyoumakegooduseofyourtimehere.Let'sputitlikethis.Whatexactlydoyouwanttoaccomplishinthenext12months?
M:I'minterestedincomputerlanguagetranslation,Imean,fromEnglishtoChineseandChinesetoEnglish.I'lltry,ifpossible,toproducesoftwareoradevicewhichcanserveasaninterpreter.
W:Yes,couldyoubeabitmorespecificabout...er...thedevice?
M:Forinstance,whenyoutalktothedeviceinEnglishitwilltranslateyourwordsintoChineseandviceversa.
W:Uhuh...doyoumeanit'llbeascompetentas...er...ahumaninterpreter?
M:Yes...well,I'llletitdealwithgeneralsituations,atleast.
W:Fascinating...andhowbigwillthedeviceitselfbe,doyouthink?
M:Thesizeofacigarettepack,Ithink.Sopeoplecanputitintheirpocket.
W:Really?Well,thatcouldbeaPh.Dproject.Tellmewhatyouhavedonesofar.
M:Inmyfouryearsofundergraduatestudy,Istudiedelectronics,advancedmathematics,hardwaredesigning,somecomputerlanguagesandprogramwriting.
W:Yes,buthaveyoudoneanypracticaljobs?Imean,haveyouwrittenanyprogramsforpracticaluse?
M:IhadbeeninvolvedinaprojectforCADinashipyard.
W:Computeraideddesign.Thatwasprobablyagoodexperience,but,unfortunately,itmaynothelpyourpresentprojectmuch.AreyoufamiliarwiththeC-language?
M:No.
W:Uhuh...thephoneticprocessingsystem,doyouknowhowsuchasystemworks?
M:Whatdoyoumeanby"phoneticprocessingsystem"?
W:Well,youknow,Englishisspokenbydifferentpeoplewithdifferentaccents.YourEnglishaccentisdifferentfrommine,andofcoursemineisnotthesameasmycolleagues'.SoasIseeit,yourdevicewouldhavetobeabletorecogniseandunderstanddifferentaccents.
M:Oh,Isee.IthinkIcanlearntheC-languageandthephoneticprocessingsystemhere.
W:Well,that'sprobablytrue,butyou'vegotonlytwelvemonthsandyouwantadegree,don'tyou?M:Yes.
W:OK,sothere'retwowaysofstudyingforadegreehere.Youeithertakesixcourses,passtheirexamsandhaveyourdissertationacceptedortheotherwayisyoudosomeresearchworkandsubmityourprojectreport.M:IthinkI'lltakethesecondway,
W:Fine,butareyousureyoucanfinishyourprojectintwelvemonths?
M:Idon'tknow,butIcanworktwelvehoursperdayandsevendaysperweek.
W:Well,I'dsuggestyouspendsometimeinourlibrary,tryingtofindoutwhatotherstudentshavedonebeforeandperhapsreconsideryourownproject,tosomeextent.Youmightnarrowyourresearcharea,concentratingonsolvingoneortwomajorproblems.And,it'dbeagoodideatotalktoyourcolleaguesinthelab,first.Anyway,I'msurewecanworkoutsomethinggood.ShallIseeyouagaininthreedays'time?
M:A11rig
A.TrueB.Fasle
13.Ifaconsumerwantsaquicksettlementoftheproblem,whomisitbettertocomplainto?
A.Ashopassistant.
B.Thestoremanager.
C.Themanufacturer.
D.Apublicorganization.
14.Inwhatpartoftheworldispotatoespeciallyafavoritefood?
15.MostpeopleinthemountainsofEduadordrinkalotofcoffeeandalcohol,buttheystilllivelong.
A.TrueB.Fasle
二、2.UseofEnglish(10題)16.(46)
17.
【C5】
18.
【C7】
19.Impatiencecharacterizesyoungintellectualworkers.Theywanttomaketheirmark【C1】______.Soit'simportanttoget【C2】______totheminachallengingmannertheidea【C3】______bigachievementsrarelycomeeasilyandquickly.Pointoutthatthelittlesuccessesareessential.Showthatthey【C4】______turnbecomethefoundationon【C5】______reputationsarebuiltandfromwhichmoreimportanttaskscanbeaccomplished.
Avarietyofjobassignments,includingjoborprojectrotation,alsokeepajob【C6】______becomingdull.Whereasit'snaturalforsomeindividualstowanttomoveaheadimmediatelytomoredifficultassignments,【C7】______properguidancetheycancontinuetolearnandtogainversatilitybyworkingonanumberofjobsthatareessentially【C8】______thesamecomplexity.Thiswaytheygainbreadth,ifnotdepth.
Probablythegreatestoffensetoguard【C9】______whendealingwithyoungerspecialistsistorejectideasoutofhand.Youmustlisten--andlistenobjectively--totheirsuggestions.Avoid【C10】______overcritical.Youwanttonurtureaninquiringmindwithafreshapproach.You'llfrustrateitquicklyifyoureverttoooften【C11】______"We'vetriedthatbeforeanditwon't【C12】______here."
Onesurewaytodisenchant【C13】______collegegraduatesisflagrantlymisusingtheirtalents.Expectthemtodosomeroutinework,ofcourse.Butdon'tmaketheir【C14】______workjustonelongseriesoferrands.Thisincludessuchbreak-inassignments【C15】______performingroutinecalculations,diggingup【C16】______material,【C17】______operatingreproductionequipment.Onelargemanufacturingcompanyrecentlyinterviewedanumberof【C18】______engineerswhohadleftthem.Thecompanyfoundthattheoverwhelmingcomplaintwasthatthecompanynotonlydidnotofferworkthat【C19】______challengingbutalsoexpected【C20】______toolittlefromtheminthewayofperformance.
【C1】
20.(41)
21.
【C9】
22.(39)
23.
【C17】
24.Pollutionisa"dirty"word.Topollutemeanstocontaminate--topsoilorsomethingbyintroducingimpuritieswhichmake【C1】______unfitoruncleantouse.Pollutioncomesinmanyforms.Weseeit,smellit,【C2】______it,drinkit,andstumblethroughit.Weliterallylivedinandbreathepollution,and【C3】______surprisingly,itisbeginningto【C4】______ourhealth,ourhappiness,andourcivilization.
Oncewethoughtofpollution【C5】______meaningsimplythesmog—thechoking,stinging,dirty【C6】______thathoversovercities.Butairpollution,whileitis【C7】______themostdangerous,isonlyonetypeofcontaminationamongseveral【C8】______attackthemostbasiclifefunctions.
Throughtheuncontrolleduseofinsecticides,manhaspollutedtheland,【C9】______thewildlife.By【C10】______sewageandchemicalsintoriversandlakes,wehavecontaminatedour【C11】______water.Wearepollutingtheoceans,too,kiltingthefishand【C12】______deprivingourselves【C13】______aninvaluablefoodsupply.
Partoftheproblemisourexploding【C14】______.Moreandmorepeopleareproducingmorewastes.Butthisproblemisintensifiedbyour"throw-away"technology.EachyearAmericans【C15】______of7millionautos,20milliontonsofwastepaper,25millionpoundsoftoothpastetubesand48millioncans.Wethrowawaygumwrappers,newspapers,andpaperplates.Itisnolongerwiseto【C16】______anything.Todayalmosteverythingisdisposable.【C17】______ofrepairingatoasteroraradio,itiseasierandcheapertobuyanotheroneanddiscardtheold,even【C18】______95percentofitspartsmaystillbefunctioning.Babydiapers,whichusedtobemadeofreusablecloth,arenowpaperthrow-aways.Soonwewillwearclothingmadeof【C19】______:"Wearitonceandthrowitaway"willbethesloganofthefashionableconsciousness.
Whereisthisalltoend?Areweturningtheworldintoagiganticdump,oristherehopethatwecansolvethepollutionproblem?【C20】______,solutionsareinsight.Afewofthemarepositivelyingenious.
【C1】
25.
【C6】
三、3.ReadingComprehension(15題)26.
______canpresentthevisitorthesignificanceofHeavenKitchen?
27.
Whichofthefollowingistrueaccordingtothetext?
A.TheHartspreferapublicuniversitytoaprivateone.
B.Itismucheasiertopaythetuitionatpresent.
C.Allstudentscangettheaidpackage.
D.Traditionalscholarshipsarestillattractivetosomefamilies.
28.(78)
29.Theideaofafishbeingabletoproduceelectricitystrongenoughtolightlampbulbs—oreventorunasmallelectricmotor—isalmostunbelievable,butseveralkindsoffishareabletodothis.Evenmorestrangely,thiscuriouspowerhasbeenacquiredindifferentwaysbyfishbelongingtoverydifferentfamilies.
Perhapsthemostknownaretheelectricrays,ortorpedoes,ofwhichseveralkindsliveinwarmseas.Theypossessoneachsideofthehead,behindtheeyes,alargeorganconsistingofanumberofhexagonal-shapedcellsratherlikeahoneycomb.Thecellsarefilledwithajelly-likesubstance,andcontainaseriesofflatelectricplates.Oneside,thenegativeside,ofeachplate,issuppliedwithveryfinenerves,connectedwithamainnervecomingfromaspecialpartofthebrain.Currentgetsthroughfromtheupper,positivesideoftheorgandownwardtothenegative,lowerside.Generallyitisnecessarytotouchthefishintwoplaces,completingthecircuit,inordertoreceiveashock.
Thestrengthofthisshockdependsonthesizeoffish,butnewly-bornonesonlyabout5centimetersacrosscanbemadetolightthebulbofapocketflashlightforafewmoments,whileafullygrowntorpedogivesashockcapableofknockingamandown,and,ifsuitablewiresareconnected,willoperateasmallelectricmotorforseveralminutes.
Anotherfamousexampleistheelectriceel.Thisfishgivesanevenmorepowerfulshock.Thesystemisdifferentfromthatofthetorpedointhattheelectricplatesrunlongitudinallyandaresuppliedwithnervesfromthespinalcord.Consequently,thecurrentpassesalongthefishfromheadtotail.Theelectricorgansofthesefisharereallyalteredmusclesandlikeallmusclesareapttotire,sotheyarenotabletogenerateelectricityforverylong.PeopleinsomepartsofSouthAmericawhovaluetheelectriceelasfood,takeadvantageofthisfactbydrivinghorsesintothewateragainstwhichthefishdischargetheirelectricity.Thehorsesarelessaffectedthanamanwouldbe,andwhentheelectriceelshaveexhaustedthemselves,theycanbecaughtwithoutdanger.
TheelectriccatfishoftheNileandofotherAfricanfreshwatershasadifferentsystemagainbywhichcurrentpassesoverthewholebodyfromthetailtothehead.Theshockgivenbythisarrangementisnotsostrongastheothertwo,butisnonethelessunpleasant.Theelectriccatfishisaslow,lazyfish,fondofgloomyplacesandgrowstoabout1metrelong;itiseatenbytheArabsinsomeareas.
Thepowerofproducingelectricitymayservethesefishbothfordefenceandattack.Ifalargeenemyattacks,theshockwilldriveitaway;butitappearsthatthecatfishandtheelectriceelusetheircurrentmostoftenagainstsmallerfish,stunningthemsothattheycaneasilybeoverpowered.
Whichofthefollowingcanproducethestrongestshock?
A.Theelectriceel.
B.Theelectriccatfish.
C.Thenewly-bornelectrictorpedoes.
D.Thefully-grownelectricray.
30.
Theauthorgaveanexampleinthethirdparagraphinorderto______.
A.emphasizetheneedtoplaceastrongervalueonnationalcooperation
B.explainwhytheAmericanideahasbeenbasedonindividualfreedom
C.illustratethefactthatAmericanswillnotsacrificetheirpersonalinterestforthegoodoftheentirecountry
D.supporttheideathatAmericansneedsthespiritofnationalcooperationtoachieveimportantnationalobjectivesinthe21stcentury
31.
Whichofthefollowingstatementsisnottrue?
A.Electricfishcomefromdifferentfamilies.
B.Onecangetashockbytouchingtheelectricraysintwoplaces.
C.Theelectricplatesintheraysareconnectedwiththespinalcord.
D.Theelectriccatfishisedible.
32.
______mayaffectthedownstreamwaterqualityandhaveanimpactonplantlife?
33.
Thefederalgovernmentgetsmostoftheirincomefrom______.
A.propertytaxB.incometaxC.salestaxD.estatetax
34.PartC
Directions:Answerquestions71-80byreferringtothefollowinggames.
Note:AnswereachquestionbychoosingA,BorCandmarkitonANSWERSHEET1.Somechoicesmayberequiredmorethanonce.
Answerquestions71~80byreferringtothefollowinggames.
Note:AnswereachquestionbychoosingA,B,CorDandmarkitonANSWERSHEET1.Somechoicesmayberequiredmorethanonce.
Whichschool...
isnotforboys?71.______
haswonthenationalaward?72.______
ownsmostfull-timefacultymemberswhoholdaPh.D.orterminaldegreeintheirfield?73.______
hasagoodreputationforwhattheydoforsomespecialpersons?74.______
hasalimitintheageforthosewhowillliveoncampus?75.______
putemphasisondevelopingstudents'verbaltalents?76.______
doesnotofferanyscholarships?77.______
providesstudentswithvocationaltraining?78.______
combinesliberalartswithprofessionalstudiesandpromotesservicetoothers?79.______
appliesadvanceddevicestoteaching?80.______
AEllesmereCollegeisoneofthefastest-growingindependentschoolsinthecountryoverthepasttwoyears,withpupils'numberrisingbyalmost20%.Thegrowthhasledtoa$1millioninvestmentprogramin1999andthebuildingofanewlowerschoolforboysandgirlsagedninetothirteen.Thenewlowerschoolwillbethelargestsinglebuildingprojectatthecollegesinceitsfoundationin1884.
Intheseniorschool,two-thirdsofthepupilsareboarders,andboardingisavailablefromtheageof11.Thesixthform.isstrongwithover120pupils;thereisanexceptionallywide-rangeofA-levelsubjectsonofferandtheCollegehaspioneeredtheuseofvideoconferencingtechnologyasawayofimprovingitscurriculum.MicrosoftOfficequailficationsarealsoavailableinthesixthform.
TheCollegeissetinextensivegroundsinthebeautifulNorthShropshireLakeDistrict.Facilitiesareexcellenfandvarious,andincludemanysportsfields,sixall-weathertenniscourts,indoorandoutdoorshootingranges,anine-holegolfcourseandapurpose-builttheater.TheCollegesailingclubhasboatswithinwalkingdistanceonWhitemere.
ThemajorityofthedaypupilsattheCollegeenjoytheCollegebusservicewhichcoversaverywidearea.BoardingthroughouttheSchoolhasbenefitedfromarecentmultimillionpoundrefurbishmentwhichhasdoneawaywithdormitoriesinfavorofmodem,comfortablerooms,thelargestsleepingsix,butmostsleepingtwoorone.
Academicstandardsarehighforaschoolwithabroadentryrange.Manyscholarshipsareawardedacrossarangeoftalents,buttheemphasisofanEllesmereeducationisfirmlyonbreadthwitheachpupilachievinghisorherfullpotential,whateverthatmaybe.Recentpupilsuccessesrangefrominternationalhonorsinshooting,fencingandcanoeingtoarecentleaver'selection--afteronlyoneyearasanundergraduate--toanExhibitioninchemistryatJesusCollege,Oxford.TheCollegehasanationalreputationforthequalityofitsdyslexiaprovision.
BThechoiceoftherightschoolforyoursonordaughterisimportant.Forover100yearsEdgehillCollegehasproudlypreparedindependently-mindedyoungpeopletotaketheirplaceinaworldofrapidlyadvancingtechnology.
Thefoundationsofasoundeducationarelaiddownearlyinlife.Edgehilldoesthiswithinthefriendlywallsofitsprepschool.Learningthroughenjoymentbeginsattheageofthreeandcontinuestothepointwherepupilscanproceedsmoothlyandconfidentlyintoseniorschool.
Entrytotheprepschoolis
35.(70)
36.
Whichofthefollowingmightbetheresultfromtheuseofefficienttechnologyincorporations?
A.Thequantityofproductswillbeconsiderablyincreased.
B.Thecostofcomputerswillbedecreased.
C.Theperdocumentcostofinformationprocessingwillbereduced.
D.Thenewestinformationwillbeeasiertoobtain.
37.PartA
Directions:ReadthefollowingtextsandanswerthequestionswhichaccompanythembychoosingA,B,CorD.MarkyouranswersonANSWERSHEET1.
Opinionpollsarenowbeginningtoshowthat,whoeveristoblameandwhateverhappensfromnowon,highunemploymentisprobablyheretostay.Thismeansweshallhavetomakewaysofsharingtheavailableemploymentmorewidely.
Butweneedtogofurther.Wemustasksomeprimaryquestionsaboutthefutureofwork.Wouldwecontinuetotreatemploymentasthenorm?Wouldwenotratherencouragemanyotherwaysforself-respectingpeopletowork?Shouldwenotcreateconditionsinwhichmanyofuscanworkforourselves,ratherthanforanemployer?Shouldwenotaimtorevivethehouseholdandtheneighborhood,aswellasthefactoryandtheoffice,ascentersofproductionandwork?
Theindustrialagehasbeentheonlyperiodofhumanhistoryinwhichmostpeople'sworkhastakentheform.ofjobs.Theindustrialagemaynowbecomingtoanend,andsomeofthechangesinworkpatternswhichitbroughtmayhavetobereversed.Thisseemsadauntingthought.But,infact,itcouldprovidetheprospectofabetterfutureforwork.Universalemployment,asitshistoryshows,hasnotmeanteconomicfreedom.
Employmentbecamewidespreadwhentheenclosuresofthe17thand18thcenturiesmademanypeopledependentonpaidworkbydeprivingthemoftheuseoftheland,andthusofthemeanstoprovidealivingforthemselves.Thenthefactorysystemdestroyedthecottageindustriesandremovedworkfrompeople'shomes.Later,astransportationimproved,firstbyrailandthenbyroad,peoplecommutedlongerdistancestotheirplacesofemploymentuntil,eventually,manypeople'sworklostallconnectionwiththeirhomelivesandtheplaceinwhichtheylived.
Meanwhile,employmentputwomenatadisadvantage.Inpre-industrialtime,menandwomenhadsharedtheproductiveworkofthehouseholdandvillagecommunity.Nowitbecamecustomaryforthehusbandtogoouttopaidemployment,leavingtheunpaidworkofthehomeandfamilytohiswife.Taxandbenefitregulationsstillassumethisnormtodayandrestrictmoreflexiblesharingofworkrolesbetweenthesexes.
Itwasnotonlywomenwhoseworkstatussuffered.Asemploymentbecamethedominantform.ofwork,youngpeopleandoldpeoplewereexcluded—aproblemnow,asmoreteenagersbecomefrustratedatschoolandmoreretiredpeoplewanttoliveactivelives.
Allthismaynowhavetochange.Thetimehascertainlycometoswitchsomeeffortandresourcesawayfromtheidealistgoalofcreatingjobsforall,totheurgentpracticaltaskofhelpingmanypeopletomanagewithoutfulltimejobs.
Researchcarriedoutintherecentopinionpollsshowsthat______.
A.availableemploymentshouldberestrictedtoasmallpercentageofthepopulation
B.newjobsmustbecreatedinordertorectifyhighunemploymentfigures
C.availableemploymentmustbemorewidelydistributedamongtheunemployed
D.thenowadayhighunemploymentfiguresareatruthoflife
38.Theideaofafishbeingabletoproduceelectricitystrongenoughtolightlampbulbs-oreventorunasmallelectricmotor—isalmostunbelievable,butseveralkindsoffishareabletodothis.Evenmorestrangely,thiscuriouspowerhasbeenacquiredindifferentwaysbyfishbelongingtoverydifferentfamilies.
Perhapsthemostknownaretheelectricrays,ortorpedoes,ofwhichseveralkindsliveinwarmseas.Theypossessoneachsideofthehead,behindtheeyes,alargeorganconsistingofanumberofhexagonal-shapedcellsratherlikeahoneycomb.Theceilsarefilledwithajelly-likesubstance,andcontainaseriesofflatelectricplates.Oneside,thenegativeside,ofeachplate,issuppliedwithveryfinenerves,connectedwithamainnervecomingfromaspecialpartofthebrain.Currentgetsthroughfromtheupper,positivesideoftheorgandownwardtothenegative,lowerside.Generallyitisnecessarytotouchthefishintwoplaces,completingthecircuit,inordertoreceiveashock.
Thestrengthofthisshockdependsonthesizeoffish,butnewly-bornonesonlyabout5centimetersacrosscanbemadetolightthebulbofapocketflashlightforafewmoments,whileafullygrowntorpedogivesashockcapableofknockingamandown,and,ifsuitablewiresareconnected,willoperateasmallelectricmotorforseveralminutes.
Anotherfamousexampleistheelectriceel.Thisfishgivesanevenmorepowerfulshock.Thesystemisdifferentfromthatofthetorpedointhattheelectricplatesrunlongitudinallyandaresuppliedwithnervesfromthespinalcord.Consequently,thecurrentpassesalongthefishfromheadtotail.Theelectricorgansofthesefisharereallyalteredmusclesandlikeallmusclesareapttotire,sotheyarenotabletogenerateelectricityforverylong.PeopleinsomepartsofSouthAmericawhovaluetheelectriceelasfood,takeadvantageofthisfactbydrivinghorsesintothewateragainstwhichthefishdischargetheirelectricity.Thehorsesarelessaffectedthanamanwouldbe,andwhentheelectriceelshaveexhaustedthemselves,theycanbecaughtwithoutdanger.
TheelectriccatfishoftheNileandofotherAfricanfreshwatershasadifferentsystemagainbywhichcurrentpassesoverthewholebodyfromthetailtothehead.Theshockgivenbythisarrangementisnotsostrongastheothertwo,butisnonethelessunpleasant.Theelectriccatfishisaslow,lazyfish,fondofgloomyplacesandgrowstoabout1metrelong;itiseatenbytheArabsinsomeareas.
Thepowerofproducingelectricitymayservethesefishbothfordefenceandattack.Ifalargeenemyattacks,theshockwilldriveitaway;butitappearsthatthecatfishandtheelectriceelusetheircurrentmostoftenagainstsmallerfish,stunningthemsothattheycaneasilybeoverpowered.
Whichofthefollowingcanproducethestrongestshock?
A.Theelectriceel.
B.Theelectriccatfish.
C.Thenewly-bornelectrictorpedoes.
D.Thefully-grownelectricray.
39.(74)
40.(77)
四、閱讀理解(5題)41.
第
40
題
hasalimitintheageforthosewhowillliveoncampus?__________
42.
第
40
題
5.__________
43.
第
35
題
Whichcanbethebesttitleforthepassage?
44.
第
50
題
hasitshandbookcriticise
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