《听力教程》2第二版第六单元文本.docx
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《听力教程》2第二版第六单元文本.docx
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《听力教程》2第二版第六单元文本
Unit6
SectionOneTacticsforListening
Part1Phonetics-Stress,IntonationandAccent
American:
W-e-ell,ljustlo-o-vericeandfish...↗
American:
Well,asIwassaying,Ijustlovericeandfishandtomatosauce↘.
American:
AndIsupposeyouwanttoknowwhatdrinksIlikeandsoon...Well,IguessIdon't
muchcareforwhisky...↗
American:
AndIdon'tcareforrum...↗
American:
AndIdon'tlikelemonadeatall.↘
American:
Andmyfavouritemusicismyown...↗
American:
AndCatStevens,Iguess.↘
Exercise:
1
2
3
4
5
6
7
Hehasfinishedhissentence
√
√
√
Hewantstoaddsomething
√
√
√
√
Part2ListeningandNote-taking
IdentifyingCriminals
Cancomputershelpthepolicetoidentifycriminals?
Expertsnowthinkcomputerscanmakeiteasierforthepolicetofindpeopletheywanttoquestion.
Atpresent,thesystemmostwidelyusedbytheBritishpoliceiscalledPhotofit.Witnesses
describeasuspectandthenapictureisbuiltuplikeajigsaw,usingfivedifferentsetsoffeatures.
Theseare:
hair,eyes,nose,mouthandchin.Thissystemcanbeveryusefulitlfindingcriminals,butonlyinonecaseoutoftwenty,Quiteoften,almosthalfthetime,infact,Photofitpicturesare
misleading.Therearetworeasonsforthis.Firstly,thepicturemaylooknothingatalllikethesuspect.Secondly,thelikenessmaybesogeneralthatitisnotatallhelpful.Andunfortunately,abadlikenesscanleadtothearrestofaninnocentperson.
Witnesses'attitudescaninfluencetheirdescriptions.Inarecentexperiment,agroupofpeoplewasshownapictureofamanandtoldthathewasamassmurderer.WhenaskedtoproducePhotofitpicturesofthisman,theymadepicturesthatshowedamurderous-lookingindividual.Butatthesametime,asecondgroupwasshownthesamepictureandtoldthatthesamemanwasalifeboatcaptainwhohadreceivedamedalforbravery.WhenthesecondgroupproducedPhotofitpictures,theseshowedamanwhowashandsomeandwell-groomed.
Thepolicehaveanotherwayofidentifyingcriminals.Policerecordscontain
tensofthousandsofphotographsofpeopleconvictedofcrimes.Witnessescanlookthroughtheseinthehopeofrecognisingsuspects;however,ithasbeendiscoveredthatawitnessbeginstoforgettheculprit'sfeaturesafterspendingalongtimelookingthroughthesephotographs.
AcomputersystemcalledFRAME(FaceRetrievalandMatchingEquipment)combines
thebestfeaturesofbothmethods.Allthephotographsonrecordareputonthecomputerfile.Whenawitnessdescribesasuspect,thecomputer'searchesthephotographsthatfitthedescription.Thewitnessisthenpresentedwithasmallnumberofphotographstolookthrough.
Ofcourse,thissystem,asitexistsatpresent,willonlyhelptoidentifypeoplewhosephotographsarealreadyonpolicefiles.Sonow,expertshavetoworkontheproblemofgettingaccuratedescriptionsfromwitnesses.Onethingtheyhavediscoveredisthatwitnessesgivebetterdescriptionswhentheyareencouragedtorecallthesceneofthecrime.Theydonotneedtogothere;justimaginingthesceneworksjustaswell.
ExerciseA:
1.Computerscanmakeiteasierforthepolicefindpeopletheywanttoquestion.
2.Abadlikenesscanleadtothearrestofaninnocentperson.
3.Awitnessbeginstoforgettheculprit'sfeaturesafterspendingalongtimelookingthroughthese
photographs.
4.Expertshavetoworkontheproblemofgettingaccuratedescriptionsfromwitnesses.
5.Witnessesgivebetterdescriptionswhentheyareencouragedtorecallthesceneofthecrime.
ExerciseB:
I.ThePhotofitsystem
A.Witnessesdescribeasuspect.
B.Thenapictureisbuiltup,usingfivedifferentsetsoffeatures.
1.Hair.
2.Eyes
3.Nose.
4.Mouth.
5.Chin.
C.Advantage
1.Thissystemcanbeveryusefulinfindingcriminals.D.Disadvantage
1.Butonlyinonecaseoutoftwentythemethodisaccurate.2.AlmosthalfthetimePhotofitpicturesaremisleading.
3.Therearetworeasonsformisleading.
i.Firstly,thepicturemaylooknothingatalllikethesuspect
ii.Secondly,thelikenessmaybesogeneralthatitisnotatallhelpful.
E.Witnesses'attitudescaninfluencetheirdescriptions.
II.Anotherwayofidentifyingcriminals
A.Policerecordstensofthousandsofphotographsofpeopleconvictedofcrimes.
B.Witnesseslookthroughtheseinthehopeofrecognisinvsusnects.
III.FRAME(FaceRetrievalandMatchingEquipment)
A.Acomputersystemcombinesthebestfeaturesofbothmethods.
B.Allthephotographsonrecordareputonthecomputerfile.
C.Thecomputersearchesthephotographsthatfitthedescription.
D.Thewitnessisthenpresentedwithasmallnumberofphotographstolookthrough.
E.Disadvantage
1.Thesystemwillonlyhellotoidentifypeoplewhosephotographsarealreadyonpolicefiles.
2.Descriptionsfromwitnessesmustbeaccurate.
SectionTwoListeningComprehension
Part1Dialogues
Dialogue1IDon'tBelieveIt
A:
No,Ithinkit'saloadofrubbishmyself.Imean,somepeoplebelieveanything,
don'tthey?
Well,itdoesn'tmakesense,doesit?
Thingsflyingaroundinthesky,comingdownfromanotherplanetandallthat?
No,Ithinkwhenthescientistssayit'shappenedandwecanexplainhowithappened--Imean,whenwehavesomerealproof,thenI'llbelieveit.
B:
Therecouldbesometruthinit,butItendtothinkit'sjustatouristattraction.1can'texplainthephotographs.Andthentherearethephotographsof"Bigfoot,"the
ermer,AbominableSnowman*inthemountainsofIndia.Well,that'sthe
samesortofthing.Isupposeitcouldbe
true,butit'sthesamewithallthesestories,you'dliketoseeitforyourselfbeforeyoubelieve
it.
C:
Oh,yes.Theydefinitelyexist.Yes,Ibelievethatsomepeoplecomebackto
haunt*us.1mean,we'veallhadstrangefeelingsaboutpeoplewhoarenolongerwithns,orstrangefeelingsaboutcertainplaces.Ithinkthosefeelingsareakindofghost.Wedon'talwaysseesomething,youknow,inalongwhitedressgoing"whooo-ooo"inthemiddleofthenight,butwecanhavestrongfeelingsaboutthepast.Somepeoplehaveverystrongfeelingssotheyactuallybegintoseethings,somethingmoving,ashape,alight,Idon'tknow.Scientificfactscan'texplaineverythinginthisworld,youknow.
1.Probablysomephotographsofmysteriousshapes,footprintsorthatsortofthings.
2.Thefirstspeaker.
1.
Ionlybelievethingswhenthereisrealprooforscientificexplanation.
2.
Peoplesometimesjustduplicateoldmysteriousstoriesinanewsettingtoattract
tourists.
3.Theredeexistghosts.Whenpeoplehaveaverystrongfeelingaboutthepast,theybegintosee
ghosts.
Dialogue2UnidentifiedFlyingObjects
Interviewer:
MrBurton,yousaythatyouhaveseenaUFO.Isthatright?
MrBurton:
Yes,absolutelyright.Ithappenedjustoverayearago.
Interviewer:
Andwherewasthis?
MrBurton:
NearmyhomeinAldershot,inthesouthofEngland.Ilivenearthebig
militarybaseinAldershot.
Interviewer:
Whattimeofdaywasit?
MrBurton:
Itwasaboutoneo'clockinthemorning.Iwasoutfishing.Theweather
forecastsaiditwasgoingtobeawarm,clearnightwithnoclouds,andthat'sperfect
forfishing.
Interviewer:
Andwhathappened?
MrBurton:
Well,Isawabrightlightcomingtowardsmeataboutthreehundred
feet,andthenitstartedtoland.Itwasbehindsometrees,butIcouldseeitclearlybecausetherewasafullmoon.ThenIsawtwoformscomingtowardsme,andwhentheywereaboutfivefeetaway,theyjuststoppedandlookedatmeforagoodtenorfifteenseconds.
Interviewer:
Whatdidtheylooklike?
MrBurton:
Theywerequitesmall,aboutfourfeettall,dressedingreensuitsfromheadtofoot,
andtheyhadhelmetsofthesamecolourwitharedvisor*,soIcouldn't
seetheirfaces.Theybothcarriedspaceguns.
Interviewer:
Didtheyspeaktoyou?
MrBurton:
Yes.Theoneontherightsaid"Comethisway,please."
Interviewer:
Weren'tyoufrightened?
...Imean,weren'tyousurprisedthatthey
spokeEnglish?
MrBurton:
Theyspokeinafunnyaccent.Itsoundedmorelikeamachinetalkingthanaperson.No,Iwasn'tfrightened.Idon'tknowwhy.Theonewhospokestartedtowalktowardsthelight,andIfollowedhim,withtheotheronebehindme.Wegottoawallandthefirst"form"justwalkedthroughit!
Icouldn'tbelieveit!
Ihadtoclimboverit,andthenwegottothespaceship.
Interviewer:
Whatdidthatlooklike?
MrBurton:
Itwasaboutforty-fivefeetacross,andsilver,very,veryshiny,and
therewereroundwindowsallroundtheside.
Interviewer:
Didyougoinside?
MrBurton:
Yes,Idid.Therewerestepsgoingup,andwewentintoanoctagonal*
room.Istoodthereforabouttenminutes.Thewalls,thefloor,andtheceilingwereallblack.Icouldn'tseeanycontrolsorinstruments,buttherewasacentralcolumngoingupfromthefloortotheceiling,aboutfourfeelwide,rightinthemiddleoftheroom.Interviewer:
Werethereanymoreofthese"forms"?
MrBurton:
No,justthetwo.Suddenly,oneofthemsaid"Standundertheredlight."Icouldn't
seeanyredlight,butthenImovedtotherightandIcouldseeitupon
thewall,just
undertheceiling.Istoodthereforaboutfiveminutes,andthenavoice
said"What
isyourage?
"Isaid"Seventy-four."Thentheytoldmetoturnaround.
Afterabout
fivemoreminutesoneofthemsaid"Youcango.Youaretoooldand
illforourpurposes."SoIleftandwentback,tothefiver.
Interviewer:
Didthespaceshiptakeoff?
MrBurton:
Yes,Iheardaveryhigh-pitchednoise,likeascream,andthething
tookoffstraight
intotheskyanddisappeared.Isatbytherivera
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