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2021年四川省眉山市公共英语五级(笔试)模拟考试(含答案)学校:________班级:________姓名:________考号:________
一、1.ListeningComprehension(15题)1.Wherecan'tchilipeppergrowaccordingtothetalk?
2.Whatarethestudentsdoingwhenthemanarrivesinclass?
A.Takinganexamination.
B.Drawinggraphs.
C.Givingpresentations.
D.Havingaclassofdiscussion.
3.Oneoftheadvantagesofchainschoolsisthattheyarefamousallovertheworld.
A.TrueB.Fasle
4.Accordingtothespeaker,howdosomepesticidesgetintoponds?
A.Theyareappliedtoaquaticweedsbyfishfarming.
B.Amphibiansreleasethemfromtheirskin.
C.Irresponsibledisposeoftheminponds.
D.Theyarewashedintopondsbytherain.
5.Whatwasthenamegiventothegenerationthatcameofageduringthe1960s?
6.Meatsalsocontainwater.
A.RightB.Wrong
7.听力原文:Inthefieldofmarketing,consumergoodsareclassedaccordingtothewayinwhichtheyarepurchased.Thetwomaincategoriesareconveniencegoodsandshoppinggoods.Twolessertypesarespecialtygoodsandunsoughtgoods.
Peopledonotspendmuchtimeshoppingforconvenienceitemssuchasgroceries,newspapers,toothpaste,razorblades,aspirin,andcandy.Thebuyingofconveniencegoodsmaybedoneroutinely,assomefamiliesbuygroceriesonceaweek.Suchregularlypurchaseditemsarecalledstaples.Sometimesconvenienceproductsareboughtonimpulse,forexample,someonehasasuddendesireforanicecreamsundaeonahotday.Ortheymaybepurchasedasemergencyitems.
Shoppinggoodsareitemsforwhichcustomerssearch.Theycompareprices,quality,andstyles,andmayvisitanumberofstoresbeforemakingdecisions.Buyinganautomobileisoftendonethisway.
Shoppinggoodsfallintotwoclasses:thosethatareperceivedasbasicallythesameandthosethatareregardedasdifferent.Itemsthatarelookeduponasbasicallythesameincludesuchthingsashomeappliances,televisionsets,andautomobiles.Havingdecidedonthemodeldesired,thecustomerisprimarilyinterestedingettingtheitematthemostfavorableprice.Itemsregardedasinherentlydifferentincludeclothing,furniture,anddishes.Quality,style.andfashionwilleithertakeprecedenceoverprice,ortheywillnotmatteratall.
Specialtygoodshavecharacteristicsthatimpelcustomerstomakespecialeffortstofindthem.Pricemaybenoconsiderationatall.Specialtygoodscanincludealmostanykindofproduct.Normally,specialtygoodshaveabrandnameorotherdistinguishingcharacteristics.
Unsoughtgoodsareitemsaconsumerdoesnotnecessarilywantorneedormaynotevenknowabout.Promotionoradvertisingbringssuchgoodstotheconsumer'sattention.Theproductcouldbesomethingnewonthemarketoritmaybeafairlystandardservice,suchaslifeinsurance,forwhichmostpeoplewillusuallynotbothershopping.
Accordingtothespeaker,whatareconveniencegoods?
A.Commoditiesthatpeopleareinconstantneedof.
B.Goodsthatareconvenienttouseorpurchase.
C.Itemsthatpeopletendtobuyunderimpulse.
D.Itemsthathavetobeboughtonceaweek.
8.Wecanmakearound-the-worldflighttripfreeofchargeifwefinishreadingenoughbooks.
A.TrueB.Fasle
9.听力原文:M:Haveyousettledin?
W:Yes,Ifeelmyselfquiteathomenow.Ihaven'tgotusedtothefoodyetbutI'menjoyingthelifeoncampus.
M:Good.Nowwe'dbettermakesureyouenjoyyourstudies.Weofferaverywiderangeofoptionsonthefoundationcourse,asyouknow,butyoucanonlytakesixcourses.Doyouknowwhatyouwanttodoyet?
W:Yes,moreorless:butI'mnotsurewhethertodobiologicalsciencesorGerman.
M:Well,that'squiteadifference.Let'ssee…you'veselectedtodo:physicalsciences,basicelectronics,artanddesign,CAD…that'scomputeraideddesignandEnglish.
W:Yes,fivecourses.
M:That'squitearange.Don'tyouwanttodomathsorcomputerprogramming,forexample?
W:Well,I'minterestedinelectronicsincomputersespeciallyinwritingcomputergames.I'dliketoproduceeducationalsoftware,educationalgames,
eventually.I'vetaughtmyselfalotofprogrammingandIwasgoodatmaths.Idon'tthinkIneedeitherofthem.
M:Then.whydidyouchoosetodoananddesign?
W:Well.thatwillbegoodformygraphics.Ineedthattoproducegames…CAD.too.I'veneverdonecomputeraideddesignbefore.
M:No…right…they'vegotsomepowerfulpackagesinthecomputergraphicsandCADoffices…you'llenjoythat.So…thatleavesEnglish.It'smostlyEnglishliterature.IknowyourEnglishisallright.Butasafirstyearstudent.you'llhavetotaketheCambridgeProficiencyTest.
W:Allfight.
Whoistheman?
A.Studentadvisor.
B.Courseteacher.
C.Admissionsofficer.
D.Departmentsecretary.
10.ThosewhovisitLondonwillcertainlygoto______.
A.theTowerofLondon
B.Harrods
C.BuckinghamPalace
D.TheGreenwichvillage
11.听力原文:M:Cigarette?
W:No,thankyou.I'vegivenup,youknow.
M:Oh.
W:It'stendaysago.Haven'thadone.
M:Well,youdon'tmindifIhadone.
W:Well,allright,then...Ohmygoodness!That'saterriblecough.
M:No,no,it'snot.It'sonly...Ionlygetitfirstthinginthemorning.
W:That'sgoingtomakeyouveryunfit,youknow.
M:No,it'sallright.Itgoesinaminute.
W:Whydon'tyoutryandgiveup?
M:Oh,no.Ioughtto,butIcan't.Itrelaxesme,smoking.
W:Really?
M:Itdoes.
W:Well,haveyoueverthoughtofjustcuttingdown?
M:Oh,no,that'sallveywellbut?..Iwouldn'tenjoyit.Idependabitonmysmoking.Imustsay.
W:Youshoulddoitgradually.Imean...well,ifyoutried...haveyouthoughtofjustgivinguponeday?
M:Yes,ohwell,yes,thatisquiteagoodidea.
W:Itis.
M:ButIthinkI'dlosecountorsomething.
W:Ohdear!Well,itmightbeanideaifyoustartedeatingsweets.
M:Ohno,Icouldn'tdothat.Icouldn'tpossibly...
W:Why?
M:Well,itmakesyoufat.
W:Well,doyouthinkthatmatters?Don'tyouthinkitisbettertobefatthantobeunhealthy?
M:No,Idon't.I'dratherbefat...Well,I'dratherbethinthanfat,certainly.
W:Ohdear.Well.Hey!I'vegotagoodidea!
M:What'sthat?
W:Whydon'tyougotoahypnotist?Mysisterdid!
M:Oh,look,youdon'tseemtorealizethatIlikesmoking.IfIgaveitup,ifIdidn'tsmokeatall,I'dprobablyendupattackingpeople!
W:Oh,don'tbesosilly!Ofcourseyouwouldn't.
Whendidthewomangiveupsmoking?
A.Tendaysago.
B.Justthismorning.
C.Aweekego.
D.Justyesterday.
12.PartC
Directions:Youwillhearatalk.Asyoulisten,answerthequestionsorcompletethenotesinyourtestbookletforQuestions21-30bywritingNOTMORETHANTHREEwordsinthespaceprovidedontheright.YouwillhearthetalkTWICE.
Younowhave1minutetoreadQuestions21-30.
听力原文:Imagineyouareahighschoolprincipal.Ateacherburstsbreathlesslyintoyouroffice.“There'safistfightinthedining-room.”shegasps.Theresponsibilityisyourstostopthefight.Howdoyoumeetit?
(1)Perhapsyou,asayoungster,tookpartinfightsandyourpresent-daytieswithstudentsarewarmandstrong.Youcanstopthefightbecauseyourprestigeishighamongthem.
(2)Youhaveaplanprepared.Otherschoolshavebeendisruptedsoyouhavealreadyplannedawaytostopanyfight.
(3)Youaretotallyconfidentofyourabilityinacrisis.Youarereadytostrideintothelunchroomandtakechargewithoutasinglequalm.Stoppingthefightwillbeeasy.
(4)Youferventlywishthatyoucoulddelegatethejobsinceyouknowthatyou'renotatalentedpeacemaker.Youwishyoucouldreturntothejobofplanningfortheschool'sneedtenyearshence.
Oneofthesefourreactionswouldbethefirstyou'dfeel.butonlyone—nottwoorthreeofthem,saythreepsychologists.Thesepsychologists—Dr.HarrietMann,Dr.HumphreyOsmondandMiriamSiegler—havecomeupwithaschemeforsortingpeopleregardlessoftheireducation,ageorsituation.
Theconceptisbasedonthepremisethatallpeoplehaveabasicwayofseeingtime.Eachofusispredisposedtoseealleventsfromtimevantagepoint.Eitheritremindsyouofthepast(past-oriented),howtheeventfitsintotoday,yesterday,andtomorrow(timeline),whatitistoday(present),orhowitwilldevelop(future).
Thethreebeganworkingin1968whenDr.MannandMrs.SieglerwereassistantstoDr.Osmond,director,attheBureauofResearch,NewJerseyNeuro-PsychiatricInstituteinPrinceton.Dr.OsmondiscurrentlydevisingwaystomakeempiricalstudiesofthetheoryandDr.MannisinCambridge,Massachusetts,writingabookontheWorldsofTime.Theirtake-offpointwasaninterestinobservationsmadebySwisspsychologistCarlGustavJung,whodescribedinthe1920sthetemperamentaldifferencesoffourpsychologicaltypes.Jungisknownasthefounderofanalyticpsychology.SinceJung'sworkin1921,however,noonehadconceivedofatheoreticalframeworkthatwouldaccountforthefourtypes.Withoutsuchaframework,therewasnopossibilityofsubstantiatingthatpeopleofdifferenttypesexperiencetheworldverydifferently.
Timeandspacearethetouchstonesinthesystem.Eachperson,afterall,useshistimesomehowandexistswithinandactsuponthespacearoundhim.Dr.Mann,andcompanyproposethatcertaintraitsaresharedbypersonsfallingineachofthefourcategories.
Thefirsttype,thepasttype,seestimeasbeingcircular.Forhim,thepastcropsupinthepresentandthenreturnstothepastasamemory.Heenjoyscollectingsouvenirsandkeepingdiaries.HetellsstoriesaboutGreatAuntHattieandalwaysremembersyourbirthday.
Pasttypesarepeggedbythissystemasemotionalpeoplewhoseetheworldinahighlysubjectiveway.Forinstance,SchoolPrincipalI(pasttype)couldidentifywiththefightandknowhowtohandleitbecauseofsomepastexperience-whetheritbesimilarfightsasachildhimselforonespreviouslydealtwithastheschoolprincipal.Inaddition,pasttypesusuallyfollowstrictmoralcodesandoftenarevaluedmoreforwhattheyarethanforwhattheydo.Thisqualityitself-becauseitlendsauthoritarianstrengthtoonewhopossessesit-mightcausethestudentstoquitfighting.Pasttypesoftenhavebeenfoundtobeskillfulatassessingtheexactemotionaltenorofaneventandareadeptatinfluencingothers'emotions,accordingtotheMann
13.The"feltimage"letsyourecognizeyourphysicalexistenceintheworld.
A.TrueB.Fasle
14.Studentscanenjoyasimplebookingandenrolmentprocedureinsomechains.
A.RightB.Wrong
15.Whatservicemustbepaidfor?
A.Computerclasses.
B.Trainingsessions.
C.Laserprinting.
D.Packageborrowing.
二、2.UseofEnglish(10题)16.
【C11】
17.(36)
18.(35)
19.(42)
20.(39)
21.(50)
22.(47)
23.
【C7】
24.
【C9】
25.
【C18】
三、3.ReadingComprehension(15题)26.
Accordingtothepassage,theteensinVillageGreencanbecalled______.
A.depressedgeneration
B.coolgeneration
C.attractivegeneration
D.prosperousgeneration
27.(72)
28.
Theword"fib"inthefourthsentenceofParagraph5,probablymeans______.
A.totellthetruth
B.toreduce
C.toincrease
D.totellasmalllie
29.(67)
30.PartB
Directions:Inthefollowingarticlesomeparagraphshavebeenremoved.ForQuestions66-70,choosethemostsuitableparagraphfromthelistA-Ftofitintoeachofthenumberedgaps.Thereisoneparagraphwhichdoesnotfitinanyofthegaps.MarkyouranswersonANSWERSHEET1.
Itwasamomentmostbusinessexecutiveswouldpausetosavor:latelastyear,GermansportinggoodspioneerAdidaslearnedthatafteryearsofdecliningmarketshare,thecompanyhadsprintedpastU.S.ReebokInternationaltotakethesecondplacebehindNikeintheraceforworldwidesales.ButRobertLouis-Dreyfus,therumpledFrenchmanwhonowrunsAdidas,anddidn'tevenstopforoneofhistrademarkHavanacigarsincelebration,worriedthatthecompanywouldgrowcomplacent.Instead,heandagroupoffriendsboughtFrenchsoccerclubOlympicdeMarseille"Nowthat'ssomethingIhavedreamedaboutsinceIwasakid."Louis-Dreyfussayswithanadolescentgrin.
66.______
Withsalesinthefirstthreequartersof1996at$2.5billion,upablithering30.7%over1995,it'shardtorecallthedismalshapeAdidaswasinwhenLouis-DreyfustookoveraschairmaninApril1993.Foundedin1920byAdiDassler,theinventorofthefirstshoesdesignedespeciallyforsports,thecompanyenjoyedanearmonopolyinathleticshoesuntilanupstartcalledNikeappearedinthe1970sandrodetherunningfadtoriches.Bytheearly1990sAdidashadcomeunderthecontrolofFrenchbusinessmanBernardTapie,whowaslaterjailedforbribingthreeFrenchsoccerplayers.AlthoughthecompanytriedtospruceupitsstaidimagewithateamofAmericandesigners,Adidaslostmorethan$100millionin1992,promptingtheFrenchbanksthathadacquiredcontrolofthecompanyfromTapietobeginadesperatesearchforanewowner.
67.______
Thepoker-lovingLouis-Dreyfusknewhehadbeendealtawinninghand.FollowingtheleadsetbyNikeinthe1970s,hemovedproductiontolow-wagefactoriesinChina,IndonesiaandThailandandsoldAdidas'EuropeanfactoriesforatokenoneDeutschemarkapiece.HehiredPeterMoore,aformerproductdesigneratNike,ascreativedirector,andsetupstudiosinGermanyfortheEuropeanmarketandinPortland,Oregon,fortheU.S.Hethenriskedeverythingbydoublinghisadvertisingbudget."Wewentfromamanufacturingcompanytoamarketingcompany,"saysLouis-Dreyfus."Itdidn'ttakeagenius—youjusthadtolookatwhatNikeandReebokweredoing.Itwaseasierforsomeonecomingfromtheoutside,withnobaggage,todoit,thanforsomebodyfrominsidethecompany."
68.______
"ThemarketingatAdidasisvery,verygoodrightnow,"saysEugenioDiMaria,editorofSportingGoodIntelligence,anindustrynewsletterperceivingAdidasasaveryyoungbrand."Thecompanyisparticularlystronginapparel,muchstrongerthanNikeandReebok."
Although90%ofAdidasproductsforwearonstreetinsteadofsportsfields,Louis-DreyfusfeltthepreviousmanagementhadlostsightofAdidas'rootsasasportingproductscompany.Afterall,AdiDasslerinventedthescrew-instudforthesoccershoeandshodAmericanchampionJesseOwensinthe1936Olympics.Sohesoldofforfoldedothernon-corebrandsthatAdidashaddeveloped,includingLeCoqSportif,ArenaandPony.Europeisstillthecompany'slargestmarketbecauseAdidasdominatestheapparelindustryandthankstosoccer'smassivepopularitythere,Louis-Dreyfttsisquicktosharecreditfortheturnaroundwithasmallgroupoffriendswhoboughtthecompanywithhimin1993.OneofthosefellowinvestorsisaformerIMScolleague,ChristianTourres,nowsalesdirectoratAdidas."We'reprettycomplementarybecauseI'mabitofadreamer,soit'sgoodtohavesomebodyknockingonyourheadtoremindyouthere'sabudget,"saysLouis-Dreyfus.
Commutingtothefirm
31.PartC
Directions:Answerquestions71-80byreferringtothefollowinggames.
Note:AnswereachquestionbychoosingA,BorCandmarkitonANSWERSHEET1.Somechoicesmayberequiredmorethanonce.
Answerquestions71~80byreferringtothefollowinggames.
Note:AnswereachquestionbychoosingA,B,CorDandmarkitonANSWERSHEET1.Somechoicesmayberequiredmorethanonce.
A=BOOKREVIEW1B=BOOKREVIEW2
C=BOOKREVIEWS3D=BOOKREVIEW4
Whichbookreview(s)contain(s)thefollowinginformation?
Comparisonofthesignificanceoftwoeconomicbooks.71.______
Stiglitz'sprestigeinthefieldofeconomics.72.______
Stiglitz'scriticismofthosewhoexaggeratedthepowerofmarketsindevelopingcountries.73.______
Policymakingshouldconsiderlocalconditions.74.______
Theinterventionofgovernmentisthewaytoassistglobalization.75.______
Stiglitz'sdedicationtothedevelopmentofpoorcountries.76.______
Stiglitz'spreferenceofonetypeofeconomicpolicyoveranotherone.77.______
MorepeoplejoinedStiglitzincriticizingfreetradeandglobalization.78.______
Stiglitz'spointshavebeensupportedbywhatactuallyhappenedinthecountry.79.______
MainlygivespositivecommentsonStiglitzandhisnewbook.80.______
AThemainpointofthebookissimple:globalizationisnothelpingmanypoorcountries.Incomesarenotrisinginmuchoftheworld,andadoptionofmarket-basedpoliciessuchasopencapitalmarkets,freetrade,andprivatizationaremakingdevelopingeconomieslessstable,notmore,Insteadofabiggerdoseoffreemarkets,Stiglitzargues,what'sneededtomakeglobalizationworkbetterismoreandsmartergovernmentintervention.Whilethishasbeensaidbefore,theideascarrymoreweightcomingfromsomeonewithStiglitz'scredentials.Insomeways,thisbookhasthepotentialtobetheliberalequivalentofMiltonFriedman's1962classicCapitalismandFreedom,whichhelpedprovidetheintellectualfoundationforagenerationofconservatives.ButGlobalizationandItsDiscontentsdoesnotrisetothelevelofcapitalismandfreedom.WhileStiglitzmakesastrongcaseforgovernmentorienteddevelopmentpolicy,beignoressomekeyargumentsinfavorofthemarket."Thebook'smainvillainistheInternationalMonetaryFund,theWashingtonorganizationthatlendstotroubledcountries",Stiglitz'contemptfortheLMFisboundless,"ItisclearthattheIMFhasfailedinitsmission,"hedeclares."ManyofthepoliciesthattheIMFpushedhavecontributedtoglobalinstability."
BWhilepartsofthisbookaredisappointinglyshallow,Stiglitz'scritiqueofthemarket-driven90'sstillresonates,especiallywhenthebusinesspageisfullofstoriesaboutwhite-collarcrimeandthestockmarketseemsstuckinaperpetualrut.EventheUnitedStatescannotblithelyassumethatfinancialmarketswillworkonautopilot.ItistestamenttothesalienceofStiglitz'sargumentsthatmanyeconomists—evensomeBushAdministrationofficials—nowembracehisviewthateconomicchangeinthedevelopingworldmustevolvemorewithlocalconditions,notonWashington'scalendar.Withoutathoroughmakeover,globalizationcouldeasilybecomeaquagmire.StiglitzsharedaNobelPrizelastyearforhisworkanalyzingtheimperfectionsofmarkets.HismaincomplaintagainstRubinandSummers,whoservedasTreasurySecretaries,andagainstFischer,theNO.2officialanddefactochiefexecutiveoftheinternationalMonetaryFund,isthattheyhadtoomuchfaiththatmarketscouldtransform.poorcountriesovernight.Helabelsthesethreemenmarketfundamentalists,whofoughttomaintainfinancialstabilitywiththesameurgencythatanearliergenerationstruggle
32.PartA
Directions:ReadthefollowingtextsandanswerthequestionswhichaccompanythembychoosingA,B,CorD.MarkyouranswersonANSWERSHEET1.
Inathree-monthperiodlastyear,twoBrooklyniteshadtobecutoutoftheirapartmentsandcardedtohospitalonstretchersdesignedfortransportingsmallwhales.TheNationalAssociationtoAdvanceFatAcceptance(NAAFA)arguesthatitwasnottheircombined900kgbulkthatmadethemill.Obesity,accordingtoNAAFA,isnotbadforyou.And,evenifitwas,thereisnothingtobedoneaboutit,becausegenesdictateweight.Attemptingtoeatlessmerelyslowsmetabolism,havingpeopleaschubbyasever.
ThisisthefatlashmovementthatcausesAmerica'sslimmingindustrysomuchpain.InhisbookBinFatLies(Ballantine,1996),GlennGaessersaysthatnostudyyethasconvincinglyshownthatweightisanindependentcauseofhealthproblems.Fatnessdoesnotkillpeople;thingslikehypertension,coronaryheartdiseasesandcancerdo.MichaelFumento,authorofTheFatoftheLand(Viking,1997),ananti-fatlashdiatribe,comparesDrGaesser'slogicwithsayingthattheguillotinedidnotkillLouisXVI:Rather,itwastheseveringofhisvertebrae,thecuttingofallthebloodvesselsinhisneck,and...thetraumacausedbyhisheaddroppingseveralfeetintoawickerbasket.
Beingfatkillsinseveralways.Itmakespeoplefarmorelikelytosufferfromheartdiseaseorhighbloodpressure.Evenmoderateobesityincreasesthechanceofcontractingdiabetes.Being40%overweightmakespeople30%~50%morelikelytodieofcancer,accordingtotheAmericanCancerSociety.Extremefatnessmakespatientssomuchlesslikelytosurvivesurgerythatmanydoctorsrefusetooperateuntiltheyslim.
Theideathatbeingoverweightiscausedbyobesitygenesisnotwhollyfalse:researchershavefoundanumberofgenesthatappeartomakesomepeoplebumoffenergyataslowerrate.Butgenesarenotdestiny.Thedifferencebetweensomeonewithageneticpredispositiontogainweightandsomeonewithoutappearstoberoughly40calories-oraspoonfulofmayonnaise—aday.
Analternativefatlashargument,advancedinbookssuchasDeanOnrush'sEatMore,WeightLess(HarperCollies,1993)andDateAtrens'sDon'tDiet(WilliamMorrow,1978),isthatfatnessisnotamatterofeatingtoomuch.TheynotethatasAmericans'weighthasballoonedoverthelastfewdecades,theirreportedcaloricintakehasplunged.Thissimplyexplainspeople'sownrecollectionofhowmuchtheyeatisextremelyunreliable.Andastheygrowfatter,peoplefeelguiltyandaremorelikelytofibabouthowmuchtheyeat.Allreputablestudiesshowthateatinglessandexercisingreduceweight.
Certainly,thebody'smetabolismslowsalittlewhenyouloseweight,becauseittakeslessenergytocarrylessbulkaround,andbecausedietingcanmakethebodyfearitisabouttostarve.Butasensiblelow-fatdietmakesweightlosspossible.Thefatlashmovementisdangerous,becauseslimmerswilloftenfindanyexcusetogiveup.Totellpeoplethatitishealthytobeobeseistoencouragethemtolivesickanddieyoung.
ThetwoBrooklynitesinthefirstparagraphwere______.
A.membersoftheNWA
B.typicalvictimsofoverweight
C.membersofthe"fatlash"movement
D.proofthatthefatlashmovementisgainingstrength
33.
"Itwaslikeofferingtodropasafeonmyheadtocuremyheadache"inthelastbutoneparagraphmeansthat______.
A.thetechnician'sproposalwouldmakethingsevenworse
B.thetechnician'sproposalcouldeventuallysolvetheproblem
C.filesstoredonhercomputerwerelikeasafe
D.erasingtheentiresystemwaslikecuringaheadache
34.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.
35.
______isagoodmethodofsupplyingenergytoremoteareas?
36.PartA
Directions:ReadthefollowingtextsandanswerthequestionswhichaccompanythembychoosingA,B,CorD.MarkyouranswersonANSWERSHEET1.
TodayTVaudiencesallovertheworldareaccustomedtothesightofAmericanastronautsintip-topcondition,withfairhair,crew-cuts,goodteeth,anuncomplicatedsenseofhumourandaseverelylimitednon-technicalvocabulary.
Whatmarksoutanastronautfromhisearthboundfellowhumanbeingsissomethingofadifficultproblem.Shouldyouwishtointerviewhim,youmustapplybeforehand,andyoumustbepreparedforalongishwait,evenifyourapplicationmeetswithsuccess.Itis,inanycase,outofthequestiontointerviewanastronautabouthisfamilylifeorpersonalactivities,becausealltheastronautshavecontractswithanAmericanmagazineunderconditionsforbiddinganyunauthorizeddisclosuresabouttheirprivatelives.
Certainobviousqualitiesareneeded.Anyonewhowouldbeaspacemanmustbeinperfecthealth,musthavepowersofconcentration(sinceworkinsideaspacecraftisexceptionallydemanding)andmusthaveconsiderablecourage.Again,space-workcallsfordedication.Courag
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