专业英语四级听力-51-真题-无答案

专业英语四级听力-51（总分考试时间分钟）100,90PART IDICTATION

1.Listen to the following passage.Altogether the passage will be readto youfour times.During the firstreading,which will be doneat normalspeed,listen andtry tounderstand themeaning.For thesecond andthirdreadings,the passagewill be read sentenceby sentence,or phraseby phrase,with intervalsof15seconds.The lastreading willbereadat normalspeed againand duringthis timeyou shouldcheck yourwork.You willthen be given2minutes tocheck throughyour workonce more.Life SpanPARTII LISTENINGCOMPREHENSIONIn SectionsA,B andC you will heareverything ONCEONLY.Listen carefully and then answer thequestions that follow.SECTION ACONVERSATIONSIn this section you will hear several conversations.Listen to the conversationscarefully and then answerthequestionsthatfollow.Questions1to3are basedon thefollowing conversation.At theend of the conversation,you willbegiven15seconds toanswer thequestions.Now listento the conversation.【点此下载音频文件】

1.Why doesthe womantell the man thestoryA.To informhim abouta classhe missed.B.Because heiseating fishsticks.C.Because shetutors him.D.To encouragehimto eata healthierlunch.

2.Why isit importantto quickfreeze freshfoodA.The cellsof plantsand animalsare damagedby slowfreezing.B.It savestime in the foodproduction process.C.It reducesthe amountof energyrequired tofreezethe food.D.The fooddefrosts morequickly.

3.What wasClarence Birdseyesurprised tolearnA.A fishcould survivebeing frozen.B.The fishwereeasier tocatch in the winter.C.Food canbe keptfrozenindefinitely.D.Solutions thatfreeze slowlyform largecrystals.Questions4to6are basedon thefollowing conversation.At theend of the conversation,you willbegiven15seconds toanswer thequestions.Now listento theconversation.【点此下载音频文件】

4.What happenedafter the man builthis**puterA・He turnedto becomean enthusiasticreader.B.Hewent onto builda machinefor hisJunior HighSchool.C.He becameobsessed**puter engineering.D.He wasbrushed bya hook.

5.What doesthemansee thefuture ofcomputersA.We willalways havetraditional PCs.B.We willseePowerMacs gettingpopular withpeople.C.Computers willbe morefriendly.D.There willbean eraof distributeddevices.

6.What doesthemansay aboutthe criticismof technologyA.We shouldignore the criticism.B.We needto considerwhat technologymay bringus.C.He feelsbadabout thecriticism.D.He thinksthecriticismis far-fetched.Questions7to10are basedon thefollowing conversation.At theend of theconversation,you willbegiven20seconds toanswer thequestions.Now listento theconversation.【点此下载音频文件】

7.What arespeakers mainlydiscussingA.The effectof the atmosphere onrainfall.B.How conditionsonEarth supportlife.C.How wateroriginated onEarth.D.A newestimateof theage of Earth.

8.What didrecent photographsfrom aspace satelliteindicateA.The surfaceof theocean isexpanding.B.Volcanic activityis increasing.C.The surfaceofEarthcontains tonsof cosmicdust.D.Thousands ofcometsare collidingwith Earthsatmosphere.

9.According to the newtheory,where didocean**eA・From**ets・B.Fromgases intheatmosphere.C.From undergroundwater thatrose to the surface.D.From watervapor.

10.Which groupdisagree withthe newtheory described intheconversationA.Biologists.B.Geologists.C.Oceanographers.D.Astronomers.SECTION BPASSAGESIn thissection,you willhear severalpassages.Listen to the passagescarefullyand thenanswer thequestions thatfollow.Questions11to13are basedon thefollowing passage.At theend of the passage,you willbe given15seconds toanswer thequestions.Now listento the passage.【点此下载音频文件】

1.The speakertells thestudents that they are not likelyto succeedif they.A.are tooselfish B.doeverything asothers doC.arenotgreedyenough D.dont geta rightdegree

2.In the speakers opinion,learning doesNOT include.A.participating innew assignmentsB.developing newskills C.renewing skillsD.going to the rightschool

3.The illiterateof thefuture refersto thosepeople whocant.A.renew theirknowledge B.forget theoldknowledge C.know whatthey aredoingD.read orwriteQuestions14to17are basedon thefollowing passage.At theend ofthe passage,you willbe given20seconds toanswer thequestions.Now listento the passage.【点此下载音频文件】

4.When wasthefirstactual radiobroadcast madeA.On ChristmasEve of

1906.B.On ChristmasEve of

1960.C.On ChristmasEve of

1895.D.On ChristmasEveof

1859.

5.Where didDe Forestbegin regularradio broadcastsA.InMassachusetts.B.On ships.C.In NewD.On shipsin NewYork harbor.York.

6.According tothe passage,who ownedreceivers inthe earlydays ofradioA.**munications officers.B.People whotreated radiotechnology asa hobby.C.People wholived inbigcities.D.People withan interestin music.

7.According tothepassage,what didDavid Sarnoffpredict aboutradiosA.They wouldget smallerinsize.B.Their signalswould travelfurther.C.They wouldbecome lesspopular thantelevision.D.Theywould becommon householditems.Questions18to20are basedon thefollowingpassage.At theend ofthepassage,you willbe given15seconds toanswer thequestions.Now listentothepassage.【点此下载音频文件】

8.According tothepassage,what werethe beliefsoftheGreek philosophersbased uponA.How thenaturalworld wasdescribedinGreek mythology.B.What theyobserved directly.C.The writingsofphilosophers fromother societies.D.Measurements madewith scientificinstruments.

9.What doesthe speakersay aboutancient Greekswho traveledsouthA.They noticedan apparentchangeintheposition ofthe NorthStar.B.They observedeclipses atdifferent timesoftheyear.C.Theywere thefirst toestimate thedistance betweenheavenly bodies.D.They wantedto provethattheEarthwas flat.

10.What doesthespeakersay theterm stadiumrefers toA.A placefor makingastronomicalobservations.B.An instrumentused forobserving stars.C.A unitof measurement.D.The NorthStar.SECTION CNEWS BROADCASTInthissection,you willhearseveralnews items.Listen tothem carefullyandthenanswer thequestionsthat follow.Questions21and22are basedon thefollowing news.At theend ofthe newsitem,you willbe given10seconds toanswer thequestions.Now listentothe news.【点此下载音频文件】

1.Where doesthe Tropicalstorm makelandfallA.In Escambia County.B.Along theGulf Coast.C.In pensacolaarea.D.Along theMexican GulfCoast.

2.Who areallowed toreturn hometonightA.The evacuatedresidents.B.EscambiaCountyspokeswoman SonyaSmith.C.People whofight hurricane.D.People whofight tropicalstorm.Questions23and24are basedon thefollowing news.At theend ofthe newsitem,you willbe given10seconds toanswer thequestions.Now listentothe news.【点此下载音频文件】

3.Until January1st,Congress andthe Presidenthave toagree on the planto.A.cut thegovernmentsspending B.decrease thecountrys debtC.lower taxesfor allAmericansD.reduce thepoverty rate

4.What willhappen ifthe Congressdoesn*t actA.Medicare paymentwill dropsharply by10%.B.Many citieswillbeable topay itsdebts.C.Defense spendingwillbedecreased.D.More familieswill gohiking.Questions25and26are basedon thefollowing news.At theend ofthe newsitem,you willbe given10seconds toanswer thequestions.Now listentothe news.【点此下载音频文件】

5.What isthe mainidea ofthenewsitemA.A firebroke outwhen people were busyscooping upthepetrol.B.More than100peoplewereengulfed byflames.C.A firecaused bygas spillput57people todeath.D.As thepetrol startedto spill,local peopleran upwith cansto collectit.

6.According tothe officials,the totaldeath is.A.57B.60C.86D.67Questions27and28are basedon thefollowing news.At theend ofthenewsitem,youwillbe given10seconds toanswer thequestions.Now listentothenews.【点此下载音频文件】

7.What causedthe collapseoftheDutch governmentA.The disagreementover policieson Afghanistan.B.The disagreementover policieson NATO.C.The disagreementbetween PM andthequeen.D.Thedisagreement betweenPMandlabor party.

8.Who isin chargefor nowin caseof emergencyA.The LabourParty.B.The PrimeMinister.C.The queen.D.NATO.Questions29and30are basedonthefollowing news.At theend ofthenewsitem,youwillbegiven10seconds toanswerthequestions.Now listentothenews.【点此下载音频文件】

9.Whats announcedby HarvardPresidentA.A planto improvefemales aptitudefor science.B.A planto improve conditionsfor scientists.C.A plantoimprovethe conditionsoftheuniversity.D.A plantoimprove conditionsfor femalescientists.

10.How muchmight theplan costA.Fifteen milliondollars.B.Five milliondollars.C.Fifty milliondollars.D.Fifty-five milliondollars.。