2023年1月大學(xué)英語四級cet4真題試卷

申明：本資料由考試吧（E）搜集整頓，轉(zhuǎn)載請注明出自服務(wù)：面向較高學(xué)歷人群，提供計(jì)算機(jī)類，外語類，學(xué)歷類，資格類，會計(jì)類，工程類，醫(yī)學(xué)類等七大類考試旳全套考試信息服務(wù)及考前培訓(xùn).1989年1月大學(xué)英語四級(CET-4)真題試卷PartIListeningComprehension(20minutes)SectionADirections: Inthissection,youwillhear10shortconversations.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Boththeconversationandthequestionwillbespokenonlyonce.Aftereachquestiontherewillbepause.Duringthepause,youmustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletterontheAnswerSheetwithalinethroughthecentre.Example:Youwillhear:Youwillread:A)Attheoffice.B)Inthewaitingroom.C)Attheairport.D)Inarestaurant.Fromtheconversationweknowthatthetwoweretalkingaboutsomeworktheyhadtofinishintheevening.Thisismostlikelytohavetakenplaceattheoffice.Therefore,A)“Attheoffice”isthebestanswer.Youshouldchoose[A]ontheAnswerSheetandmarkitwithasinglelinethroughthecentre.SampleAnswer[A][B][C][D]1. A)Helentherhisextrapen.B)Hewasafraidoflosinghispen.C)Heofferedherapencil.D)Hesaidhedidn’thaveanyextraink.2. A)Theteacherreviewedapreviouslesson.B)Theteachertaughtanewlesson.C)TheteacherpostponedtheclassuntilFriday.D)Theteachermadethestudentswriteinclass.3. A)It’sgoingtoattractalotofstudents.B)It’sgoingtobealotoffun.C)It’sgoingtorequirealotofreading.D)It’sgoingtoworkoutquitewell.4. A)Sheagreestolendhimthecar.B)Sheoffershimthecar.C)Sherefusestolendhimthecar.D)Sheispleasedtolendhimthecar.5. A)Tothebeach.B)Toamovietheatre.C)Toaplay.D)Toarestaurant.6. A)Policemananddriver.B)Policemanandthief.C)Teacherandpupil.D)Directorandactress.7. A)Heisoftenlateformeals.B)Heisexpectingaletterfromabroad.C)Hewrotetohisfamilylastmonth.D)Heisanxioustogobackhome.8. A)Heismodest.B)Heissatisfied.C)Heisproud.D)Heisupset.9. A)Europe.B)Here.C)Canada.D)California.10. A)Thetrainiscrowded.B)Thetrainislate.C)Thetrainisontime.D)Thetrainisoutoforder.SectionBDirections: Inthissection,youwillhear3shortpassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.PassageOneQuestions11to13arebasedonthepassageyouhavejustheard.11. A)Thecrust.B)Theground.C)Theplate.D)Theboundary.12. A)Two.B)Seventy.C)Seven.D)Twelve.13. A)TheeastcoastofNorthAmerica.B)ThewestcoastofNorthAmerica.C)ThemiddleoftheAtlanticOcean.D)ThemiddleofthePacificOcean.PassageTwoQuestions14to16arebasedonthepassageyouhavejustheard.14. A)Theywanttoattractattention.B)Itisfashionabletowearsuchclothes.C)Theappearrespectableinsuchclothes.D)Ridingamotorcyclemakesonedirty.15. A)Itisefficient.B)Itisexciting.C)Itisconvenient.D)Itisdangerous.16. A)Ifhealwayswearsprotectiveclothing.B)Ifhecanseeeverythingaroundhimclearly.C)Ifheisverycareful.D)Ifhehasalotofdefenders.PassageThreeQuestions17to20arebasedonthepassageyouhavejustheard.17. A)Hewasstruckbylightning.B)Hehadacaraccident.C)Hewasveryold.D)Hefelldowninhisyard.18. A)Hiswife.B)Aclock.C)Atree.D)Lightning.19. A)Hidingunderatree.B)Enteringthehouse.C)Drivingacar.D)Lyingontheground.20. A)Afallfromthetree.B)Theunexpectedreturnofhiswife.C)Anotherflashoflightning.D)Anotherheavyblow.PartIIReadingComprehension(35minutes)Directions: Thereare4readingpassagesinthispart.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.PassageOneQuestions21to25arebasedonthefollowingpassage.Morethan30,000driversandfrontseatpassengersarekilledorseriouslyinjuredeachyear.Atthespeedofonly30milesperhouritisthesameasfallingfromathird-floorwindows.Wearingaseatbeltsaveslives;itreducesyourchanceofdeathorseriousinjurybymorethanhalf.Thereforedriversorfrontseatpassengersover14inmostvehiclesmustwearaseatbelt.Ifyoudonot,youcouldbefinedupto￡50.itwillnotbeuptothedriverstomakesureyouwearyourbelt.Butitwillbethedriver’sresponsibilitytomakesurethatchildrenunder14donotrideinthefrontunlesstheyarewearingaseatbeltofsomekind.However,youdonothavetowearaseatbeltifyoureversingyourvehicle;oryouaremakingalocaldeliveryorcollectionusingaspecialvehicle;orifyouhaveavalidmedicalcertificatewhichexcusesyoufromwearingit.Makesurethesecircumstancesapplytoyoubeforeyoudecidenottowearyouseatbelt.Rememberyoumaybetakentocourtfornotdoingso,andyoumaybefinedifyoucannotprovetothecourtthatyouhavebeenexcusedfromwearingit.21. Thistextistakenfrom________.A)amedicalmagazineB)apolicereportC)alegaldocumentD)agovernmentinformationbooklet22. Wearingaseatbeltinavehicle________.A)reducesroadaccidentsbymorethanhalfB)savesliveswhiledrivingataspeedupto30milesperhourC)reducesthedeathrateintrafficaccidentsD)savesmorethan15,000liveseachyear23. Itisthedriver’sresponsibilityto________.A)makethefrontseatpassengerwearaseatbeltB)makethefrontseatchildrenunder14wearaseatbeltC)stopchildrenridinginthefrontseatD)wearaseatbelteachtimehedrives24. Accordingtothetext,whichofthefollowingpeopleridinginthefrontdosnothavetowearaseatbelt?A)Someonewhoisbackingintoaparkingspace.B)Someonewhoispickingupthechildrenfromthelocalschool.C)Someonewhoisdeliveringinvitationletters.D)Someonewhoisunder14.25. Forsomepeople,itmaybebetter________.A)towearaseatbeltforhealthreasonsB)nottowearaseatbeltforhealthreasonsC)togetvalidmedicalcertificatebeforewearingaseatbeltD)topayafineratherthanwearaseatbeltPassageTwoQuestions26to30arebasedonthefollowingpassage.Ifyouwanttostayyoung,sitdownandhaveagoodthink.ThisistheresearchfindingofateamofJapanesedoctors,whosaythatmostofourbrainsarenotgettingenoughexercise—andasaresult,weareageingunnecessarilysoon.ProfessorTaijuMatsuzawawantedtofindoutwhyotherwisehealthyfarmersinnorthernJapanappearedtobelosingtheirabilitytothinkandreasonatarelativelyearlyage,andhowtheprocessofageingcouldbesloweddown.WithateamofcolleaguesatTokyoComputertechnologyenabledtheresearcherstoobtainprecisemeasurementsofthevolumeofthefrontandsidesectionsofthebrain,whichrelatetointellect(智能)andemotion,anddeterminethehumancharacter.(Therearsectionofthebrain,whichcontrolsfunctionslikeeatingandbreathing,doesnotcontractwithage,andonecancontinuelivingwithoutintellectualoremotionalfaculties.)Contractionoffrontandsideparts—ascellsdieoff—wasobservedIsomesubjectsintheirthirties,butitwasstillnotevidentinsomesixty-andseventy-year-olds.Matsuzawaconcludedfromhisteststhatthereisasimpleremedytothecontractionnormallyassociatedwithage—usingthehead.Thefindingsshowingeneraltermsthatcontractionofthebrainbeginssoonerinpeopleinthecountrythaninthetowns.Thoseleastatrisk,saysMatsuzawa,arelawyers,followedbyuniversityprofessorsanddoctors.Whitecollarworkersdoingroutineworkingovernmentofficesare,however,aslikelytohaveshrinkingbrainsasthefarmworker,busdriverandshopassistant.Matsuzawa’sfindingsshowthatthinkingcanpreventthebrainfromshrinking.Bloodmustcirculateproperlyintheheadtosupplythefreshoxygenthebraincellsneed.“Thebestwaytomaintaingoodbloodcirculationisthroughusingthebrain,”hesays,“Thinkhardandengageinconversation.Don’trelyonpocketcalculators.”26. Theteamofdoctorswantedtofindout________.A)whycertainpeopleagesoonerthanothersB)howtomakepeoplelivelongerC)thesizeofcertainpeople’sbrainsD)whichpeoplearemostintelligent27. Onwhataretheirresearchfindingsbased?A)AsurveyoffarmersinnorthernJapan.B)Testsperformedonathousandoldpeople.C)ThestudyofbrainvolumesofdifferentpeopleD)Thelatestdevelopmentofcomputertechnology.28. Thedoctor’stestshowthat________.A)ourbrainsshrinkaswegrowolderB)thefrontsectionofthebraindoesnotshrinkC)sixty-year-oldshavethebetterbrainsthanthirty-year-oldsD)somepeople’sbrainshavecontractedmorethanotherpeople’s29. Theword“subjects”inParagraph5means________.A)somethingtobeconsideredB)branchesofknowledgestudiedC)personschosentobestudiedinanexperimentD)anymemberofastateexceptthesupremeruler30. Accordingtothepassage,whichpeopleseemtoageslowerthantheothers?A)Lawyers.B)Farmers.C)Clerks.D)Shopassistants.PassageThreeQuestions31to35arebasedonthefollowingpassage.OnJune17,1744,theofficialsfromMarylandandVirginiaheldatalkwiththeIndiansoftheSixNations.TheIndianswereinvitedtosendboystoWilliamandMaryCollege.Weknowthatyouhaveahighopinionofthekindoflearningtaughtinyourcolleges,andthatthecostsoflivingofouryoungmen,whilewithyou,wouldbeveryexpensivetoyou.Weareconvincedthatyoumeantodousgoodbyyourproposal;andwethankyouheartily.Butyoumustknowthatdifferentnationshavedifferentwaysoflookingatthings,andyouwillthereforenotbeoffendedifyourideasofthiskindofeducationhappennottbethesameasyours.Wehavehadsomeexperienceofit.Severalofouryoungpeoplewereformerlybroughtupatthecollegesofthenorthernprovinces:theyweretaughtallyoursciences;but,whentheycamebacktous,theywerebadrunners,ignorantofeverymeansoflivinginthewoods…Weare,however,notthelessobligedbyyourkindoffer,thoughwerefusetoacceptit;and,toshowourgratefulsenseofit,ifthegentlemenofVirginiawillsendupadozenoftheirsons,wewilltakecareoftheireducation,teachtheminallweknow,andmakemenofthem.31. Thepassageisabout________.A)thetalkbetweentheIndiaB)thecollegesofnorthernprovinceC)theeducationalvaluesoftheIndiaD)theproblemsoftheAmericansinthemid-eighteenthcentury32. TheIndians’A)politelyrefuseafriendlyofferB)expresstheiropiniononequaltreatmentC)showtheirprideD)describeIndiancustoms33. Accordingtotheletter,theIndiaA)itwouldbebetterfortheirboystoreceivesomeschoolingB)theywerebeinginsultedbytheofferC)theyknewmoreaboutsciencethantheofficialsD)theyhadabetterwayofeducatingyoungmen34. Differentfromtheofficials’viewofeducation,theIndiaA)youngwomenshouldalsobeeducatedB)theyhaddifferentgoalsofeducationC)theytaughtdifferentbranchesofscienceD)theyshouldteachthesonsoftheofficialsfirst35. Thetoneoftheletterasawholeisbestdescribedas________.A)angryB)pleasantC)politeD)inquiringPassageFourQuestions36to40arebasedonthefollowingpassage.Inwhatnowseemsliketheprehistorictimesofcomputerhistory,theearth’spostwarera,therewasquiteawide-spreadconcernthatcomputerswouldtakeovertheworldfrommanoneday.Alreadytoday,lessthanfortyyearslater,ascomputersarerelievingusofmoreandmoreoftheroutinetasksinbusinessandinourpersonallives,wearefacedwithalessdramaticbutalsolessforeseenproblem.Peopletendtobeover-trustingofcomputersandarereluctanttochallengetheirauthority.Indeed,theybehaveasiftheywerehardlyawarethatwrongbuttonsmaybepushed,orthatacomputermaysimplymalfunction(失誤).Obviously,therewouldbenopointininvestinginacomputerifyouhadtocheckallitsanswers,butpeopleshouldalsorelyontheirowninternalcomputersandcheckthemachinewhentheyhavethefeelingthatsomethinghasgonewrong.Questioningandroutinedouble-checksmustcontinuetobeasmuchapartofgoodbusinessastheywereinpre-computerdays.Maybeeachcomputershouldcomewiththewarning:forallthehelpthiscomputermayprovide,itshouldnotbeseenasasubstituteforfundamentalthinkingandreasoningskills.36. Whatisthemainpurposeofthispassage?A)Tolookbacktotheearlydaysofcomputers.B)Toexplainwhattechnicalproblemsmayoccurwithcomputers.C)Todiscourageunnecessaryinvestmentincomputers.D)Towarnagainstamentallylazyattitudetowardscomputers.37. Accordingtothepassage,theinitialconcernaboutcomputerswasthattheymight________.A)changeourpersonallivesB)takecontroloftheworldC)createunforeseenproblemsD)affectourbusinesses38. Thepassagerecommendsthosedealingwithcomputersto________.A)bereasonablydoubtfulaboutthemB)checkalltheiranswersC)substitutethemforbasicthinkingD)usethemforbusinesspurposesonly39. Thepassagesuggeststhatthepresent-dayproblemwithregardtocomputersis________.A)challengingB)psychologicalC)dramaticD)fundamental40. Itcanbeinferredfromthepassagethattheauthorwoulddisapproveof________.A)investmentincomputersB)theuseofone’sinternalcomputerC)double-checkoncomputersD)completedependenceoncomputersfordecision-makingPartIIIVocabularyandStructure(20minutes)Directions: Thereare30incompletesentencesinthispart.ForeachsentencetherearefourChoicesmarkedA),B),C)andD).ChoosetheONEthatbestcompletesthesentence.ThenmarkthecorrespondingletterontheAnswerSheetwithasingletimethroughthecentre.41. Mary’sscoreonthetestisthehighestinherclass;she________havestudiedveryhard.A)mayB)shouldC)mustD)oughtto42. ________thatthetradebetweenthetwocountriesreacheditshighestpoint.A)Duringthe1960’B)Itwasinthe1960’C)Thatitwasinthe1960’D)Itwasthe1960’s43. Hesuggested________totomorrow’sexhibitiontogether.A)ustogoB)wewentC)weshallgoD)wego44. Noagreementwasreachedinthediscussionasneithersidewouldgivewayto________.A)theotherB)anyotherC)anotherD)other45. WithagreementwasreachedIthediscussionasneithersidewouldgivewayto________.A)mustn’tgoB)wouldn’tgoC)oughtn’ttogoD)shouldn’thavegone46. Ifyouwant________youhavetogetthefundsomewhere.A)thatthejobisdoneB)thejobdoneC)tohavedonethejobD)thejobthatisdon47. ThereismorelandinAustraliathanthegovernmentknows________.A)whattodowithB)howtodoC)todowithitD)todoit48. It’snouse________menottoworry.A)youtellB)yourtellingC)foryoutohavetoldD)havingtold49. Ihavetwoboysbut________ofthemlikessweets.A)bothB)neitherC)eitherD)none50. Onlybyshoutingatthetopofhisvoice________.A)washeabletomakehimselfhearB)hewasabletomakehimselfhearC)hewasabletomakehimselfheardD)washeabletomakehimselfheard51. ________suchagoodchance,heplannedtolearnmore.A)TobegivenB)HavingbeengivenC)HavinggivenD)Giving52. Ifit________toomuchtrouble,I’dloveacupoftea.A)isn’tB)wasn’tC)weren’tD)hadn’tbeen53. Mysister’sprofessorhadher________herpapermanytimesbeforeallowinghertopresentittothecommittee.A)rewrittenB)torewriteC)rewriteD)rewriting54. silveristhebestconductorofelectricity,copper________itclosely.A)followedB)followingC)tofollowD)beingfollowed55. Theyareconsidering________beforethepricesgoup.A)ofbuyingthehouseB)withbuyingthehouseC)buyingthehouseD)tobuythehouse56. Shewasgladthathersuccesswould________forthewomenwhowouldfollow.A)makethingseasierB)makeiteasierC)beeasierD)beeasiertomake57. Theywillhaveitfinishedin________.A)threequarterofanhourtimeB)threequartersofanhourtimeC)threequarterofanhour’stimeD)threequartersofanhour’stime58. ADreamoftheRedChamberissaid________intodozensoflanguagesinthelastdecade.A)tohavebeentranslatedB)totranslateC)tobetranslatedD)tohavetranslated59. Hewentahead________allwarningsaboutthedangerofhismission.A)incaseofB)becauseofC)regardlessofD)priorto60. Weobject________punishingawholegroupforoneperson’sfault.A)againstB)aboutC)toD)or61. Jackisgood,kind,hard-workingandintelligent;________;Ican’tspeaktoohighlyofhim.A)asaresultB)inawordC)bythewayD)onthecontrary62. Themantowhomwehandedtheformspointedoutthattheyhadnotbeen________filledin.A)consequentlyB)regularlyC)comprehensivelyD)properly63. Ishallhavecompanioninthehouseafterallthese________years.A)singleB)soleC)aloneD)lonely64. Afteralongandexhaustingjourney,theyarrived________.A)tillthelastB)atlastC)bytheendD)attheend65. Noneoftheservantswere________whenMr.Smithwantedtosendamessage.A)availableB)attainableC)approachableD)applicable66. Ican’t________whatthatobjectis.A)makeupB)makeoverC)makeoutD)makefor67. Iwanttobuyanewtieto________thisbrownsuit.A)gointoB)goafterC)gowithD)goby68. Thenewestsatellitecan________athousandtelephoneconversationsandacolourTVprogramatthesametime.A)carryB)extendC)bringD)take69. Ican________somenoisewhileI’mstudying,butIcan’tstandloudnoises.A)comeupwithB)catchupwithC)putupwithD)keepupwith70. Whenthewholeareawas________bytheflood,thegovernmentsentfoodtherebyhelicopter.A)cutawayB)cutdownC)cutupD)cutoffPartIVCloze(15minutes)Directions: Thereare20blanksinthefollowingpassage.ForeachblanktherearefourchoicesmarkedA),B),C)andD)ontherightsideofthepaper.YoushouldchoosetheONEthatbestfitsintothepassage.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.Inrecentyears,moreandmoreforeignersareinvolvedintheteachingprogramsoftheUnitedStates.Boththeadvantagesandthedisadvantages__71__usingfaculty(教師[總稱])fromforeigncountries__72__teachingpositionshavetobe__73__,ofcourse.Itcanbesaidthatforeign__74__thatmakesthefacultymemberfromabroadanasset(財(cái)富)also__75__problemsofadjustment,bothfortheuniversityandfortheindividual.Theforeignresearchscholarusuallyisolates__76__inthelaboratoryasameansofprotection;__77__,whatheneedsistobefitted__78__ahighlyorganizeduniversitysystemquitedifferentfrom__79__athome.Heisfacedinhisdailywork__80__differencesinphilosophy,arrangementsofcoursesandmethodsofteaching.Boththevisitingprofessorandhisstudents__81__backgroundineachother’scultures.Some__82__ofwhatisalreadyinthemindsofAmericanstudentsis__83__bytheforeignprofessor.Whilehelpinghimto__84__himselftohisnewenvironment,theuniversitymustalso__85__certainadjustmentsinorderto__86__fulladvantageofwhatthenewcomercan__87__.Itisn’talwaysknownhowtomake__88__useofforeignfaculty,especiallyatsmallercolleges.Thisisthoughttobea__89__wherefurtherstudyiscalled__90__.Thefindingsofsuchastudywillbeofvaluetocollegesanduniversitieswithforeignfaculty.71. A)withB)forC)ofD)at72. A)inB)onC)forD)within73. A)thoughtB)measuredC)balancedD)considered74. A)situationB)circumstanceC)backgroundD)condition75. A)carriesB)createsC)emergesD)solves76. A)himselfB)oneselfC)himD)one77. A)otherwiseB)moreoverC)howeverD)also78. A)intoB)byC)toD)with79. A)thoseB)whichC)whatD)that80. A)towardB)withC)toD)at81. A)haveB)possessC)needD)lack82. A)conceptB)feelingC)planD)intelligence83. A)orderedB)askedC)insistedD)required84. A)placeB)adaptC)putD)direct85. A)remainB)keepC)makeD)cause86. A)takeB)makeC)doD)be87. A)showB)affordC)expressD)offer88. A)powerfulB)creativeC)imaginaryD)advanced89. A)scopeB)rangeC)fieldD)district90. A)onB)forC)uponD)at1989年1月四級參照答案PartI1. C2. A3. C4. A5. D6. A7. B8. D9. C10. B11. A12. C13. B14. D15. D16. C17. B18. B19. A20. DPartII21. D22. C23. B24. A25. B26. A27. C28. D29. C30. A31. C32. A33. D34. B35. C36. D37. B38. A39. B40. DPartIII41. C42. B43. D44. A45. D46. B47. A48. B49. B50. D51. B52. A53. C54. B55. C56. A57. D58. C59. C60. C61. B62. D63. D64. B65. A66. C67. C68. A69. C70. DPartIV71. C72. A73. D74. C75. B76. A77. C78. A79. D80. B81. D82. A83. D84. B85. C86. A87. D88. B89. C90. B1989年1月四級聽力原文SectionAExample:M:Isitpossibleforyoutoworklate,MissGrey?W:Worklate?Isupposeso,ifyoureallythinkit’snecessary.Q:Wheredoyouthinkthisconversationmostprobablytookplace?1. W:Couldyoulendmeapen?Minehasjustrunoutofink.M:I’mafraidIdon’thaveanextraone.Wouldapencildo?Q:Howdidthemanrespondtothewoman’srequest?2. W:Whatdidyoudoinclasstoday?M:TheteacherwentoverlastFriday’slesson.Q:Whatdidtheteacherdo?3. W:ItlooksliketheEnglishcourseisgoingtobealotofwork.M:Didn’tyouseethereadinglistisenormous?Q:WhatdidtheythinkoftheEnglishcourse?4. M:CanIuseyournewcar,Auntie?W:Yes,ofcourse,ifyoudriveitcarefully.Q:What’stheaunt’sanswer?5. M:TheGoldenLionsoundslikeaniceplacetoeat.W:Ok,let’sgothere.Ihearthattheyhaveacompletemenuandawarmatmosphere.Q:Wherearethemanandwomangoing?6. M:Whydidn’tyoustopwhenwefirstsignaled?W:I’msorry.WillIhavetopayafine?Q:Whatistheprobablerelationshipbetweenthemanandthewoman?7. M:Ihaven’theardfrommyfamilysincelastmonth.W:Don’tworry,Bill.Overseasmailisoftenslow.Q:Whatcanwelearnaboutthemanfromtheconversation?8. W:Jack,howareyoudoingwithyourpaper?M:I’vewrittenandrewrittenitsomanytimesthatIwonderwhenIcanfinishit.Q:Whatcanwelearnabouttheman?9. M:HasGeorgereturnedfromEuropeyet?W:Yes,buthehadbeenonlyhereforthreedaysbeforehiscompanysenthimtoCanada.Q:WhereisGeorgenow?10. W:Excuseme.Doyouknowwhenthetrainwillarrive?M:I’msorry.Thetrainisbehindschedule.Youhavetowaitanothertwentyminutes.Q:Whatdowelearnfromthisconversation?SectionBPassage1Theearthiscomposedofseverallayers.Thetoplayeroftheearthiscalledtheearth’scrust.Theearth’scrustisdividedintosevensections.Thesesectionsarecalledplates.Whentwoplatespushagainsteachother,orwhentwoplatesrubagainsteachother,anearthquakewilloccur.Anearthquakecausesthegroundabovetheplatetoshake.Theshakingiscausedbythemotionoftwoplates.Earthquakesarelikelytohappenattheboundariesoftheearth’splates.Eachoftheseplatesisabout70kilometersthick.Let’stakealookatthegeneralboundariesofoneofthesesevenmajorplate.TaketheNorthAmericanplateforanexample.TheleftboundaryofthisplateisthewestcoatofNorthAmericaandtheeastboundaryofthisplateisthroughthemiddleoftheAtlanticOcean.Thatis,thisplateextendsfromthewestcoastofNorthAmericatothemiddleoftheAtlanticOcean.Questions11to13arebased