听力第二册UNIT6.docx
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听力第二册UNIT6.docx
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听力第二册UNIT6
Unit6
SectionOneTacticsforListening
Part1Phonetics-Stress,IntonationandAccent
Peter:
You'vebeentoZanada,haven'tyou?
↘
Peter:
Ohyes,Iremember.Youwentacoupleofyearsago,didn'tyou?
↗
Peter:
Now,let'ssee...It'ser,it'samainlyagriculturalcountry,isn'tit?
"↘
Peter:
Wellyes,Iknow,butthere'snotmuchindustryonceyou'veleftthecoast,isthere?
↗
Peter:
lsee...Mm,sotheNorthwouldbethebestplacetogoto,wouldn'tit?
'↘
Peter:
Yeah.Mindyou,IshouldthinktheSouthisverybeautiful,isn'tit?
'↘
Peter:
(laughs)Yeah.That'sright.Ohandwhatabouttransport?
It'dbebettertohireacar,
wouldn'tit?
↗
Peter:
Really?
That'scheap.Itcoststhatmuchadayhere,doesn'tit?
↘
Peter:
Yeah,wellthat'sfine,Maggie.Thanksalot.Bye.
Exercise:
12345678
AmIright?
√√√
Agreewithme√√√√√
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.Policerecordscontaintensofthousandsofphotographsofpeopleconvictedofcrimes.Witnessescanlookthroughtheseinthehopeofrecognisingsuspects;however,ithasbeendiscoveredthatawitnessbeginstoforgettheculprit'sfeaturesafterspendingalongtimelookingthroughthesephotographs.
AcomputersystemcalledFRAME(FaceRetrievalandMatchingEquipment)combines
thebestfeaturesofbothmethods.Allthephotographsonrecordareputonthecomputerfile.Whenawitnessdescribesasuspect,thecomputer'searchesthefileforphotographsthatfitthedescription.Thewitnessisthenpresentedwithasmallnumberofphotographstolookthrough.
Ofcourse,thissystem,asitexistsatpresent,willonlyhelptoidentifypeoplewhosephotographsarealreadyonpolicefiles.Sonow,expertshavetoworkontheproblemofgettingaccuratedescriptionsfromwitnesses.Onethingtheyhavediscoveredisthatwitnessesgivebetterdescriptionswhentheyareencouragedtorecallthesceneofthecrime.Theydonotneedtogothere;justimaginingthesceneworksjustaswell.
ExerciseA:
1.Computerscanmakeiteasierforthepolicefindpeopletheywanttoquestion.
2.Abadlikenesscanleadtothearrestofaninnocentperson.
3.Awitnessbeginstoforgettheculprit'sfeaturesafterspendingalongtimelookingthroughthese
photographs.
4.Expertshavetoworkontheproblemofgettingaccuratedescriptionsfromwitnesses.
5.Witnessesgivebetterdescriptionswhentheyareencouragedtorecallthesceneofthecrime.
ExerciseB:
IdentifyingCriminals
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.Thecomputersearchesthefileforphotographsthatfitthedescription.
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,"theermer,AbominableSnowman*inthemountainsofIndia.Well,that'sthesamesortofthing.Isupposeitcouldbe
true,butit'sthesamewithallthesestories,you'dliketoseeitforyourselfbeforeyoubelieve
it.
C:
Oh,yes.Theydefinitelyexist.Yes,Ibelievethatsomepeoplecomebacktohaunt*us.1mean,we'veallhadstrangefeelingsaboutpeoplewhoarenolongerwithns,orstrangefeelingsaboutcertainplaces.Ithinkthosefeelingsareakindofghost.Wedon'talwaysseesomething,youknow,inalongwhitedressgoing"whooo-ooo"inthemiddleofthenight,butwecanhavestrongfeelingsaboutthepast.Somepeoplehaveverystrongfeelingssotheyactuallybegintoseethings,somethingmoving,ashape,alight,Idon'tknow.Scientificfactscan'texplaineverythinginthisworld,youknow.
ExerciseA:
1.Probablysomephotographsofmysteriousshapes,footprintsorthatsortofthings.
2.Thefirstspeaker.
ExerciseB:
1.Ionlybelievethingswhenthereisrealprooforscientificexplanation.
2.Peoplesometimesjustduplicateoldmysteriousstoriesinanewsettingtoattracttourists.
3.Theredeexistghosts.Whenpeoplehaveaverystrongfeelingaboutthepast,theybegintosee
ghosts.
Dialogue2UnidentifiedFlyingObjects
Interviewer:
MrBurton,yousaythatyouhaveseenaUFO.Isthatright?
MrBurton:
Yes,absolutelyright.Ithappenedjustoverayearago.
Interviewer:
Andwherewasthis?
MrBurton:
NearmyhomeinAldershot,inthesouthofEngland.IlivenearthebigmilitarybaseinAldershot.
Interviewer:
Whattimeofdaywasit?
MrBurton:
Itwasaboutoneo'clockinthemorning.Iwasoutfishing.Theweatherforecastsaiditwasgoingtobeawarm,clearnightwithnoclouds,andthat'sperfectforfishing.
Interviewer:
Andwhathappened?
MrBurton:
Well,Isawabrightlightcomingtowardsmeataboutthreehundredfeet,andthenitstartedtoland.Itwasbehindsometrees,butIcouldseeitclearlybecausetherewasafullmoon.ThenIsawtwoformscomingtowardsme,andwhentheywereaboutfivefeetaway,theyjuststoppedandlookedatmeforagoodtenorfifteenseconds.
Interviewer:
Whatdidtheylooklike?
MrBurton:
Theywerequitesmall,aboutfourfeettall,dressedingreensuitsfromheadtofoot,
andtheyhadhelmetsofthesamecolourwitharedvisor*,soIcouldn'tseetheirfaces.Theybothcarriedspaceguns.
Interviewer:
Didtheyspeaktoyou?
MrBurton:
Yes.Theoneontherightsaid"Comethisway,please."
Interviewer:
Weren'tyoufrightened?
...Imean,weren'tyousurprisedthattheyspokeEnglish?
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,andtherewereroundwindowsallroundtheside.
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,butthenImovedtotherightandIcouldseeituponthewall,just
undertheceiling.Istoodthereforaboutfiveminutes,andthenavoicesaid"What
isyourage?
"Isaid"Seventy-four."Thentheytoldmetoturnaround.Afterabout
fivemoreminutesoneofthemsaid"Youcan
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