1、2001年1月大學(xué)英語(yǔ)六級(jí)(CET6)真題試卷PassageOneQuestions11to15arebasedonthefollowingpassage.Birdsthatareliterallyhalfasleep—withonebrainhemispherealerttheothersleeping—controlwhichsideofthebrainremainsawakeaccdingtoanewstudyofsleeping

2、ducks.Earlierstudieshavedocumentedhalfbrainsleepinawiderangeofbirds.Thebrainhemispherestaketurnssinkingintothesleepstageacterizedbyslowbrainwaves.Theeyecontrolledbythesleepinghemispherekeepsshutwhilethewakefulhemisphere’

3、seyestaysopenalert.Birdsalsocansleepwithbothhemispheresrestingatonce.Decadesofstudiesofbirdflocksledresearcherstopredictextraalertnessinthemevulnerableendoftherowsleepers.Sureenoughtheendbirdstendedtowatchcarefullyonthes

4、ideawayfromtheircompanions.Ducksintheinnerspotsshowednopreferencefgazedirection.Alsobirdsdozing(打盹)attheendofthelinerestedtosinglehemispheresleepratherthantotalrelaxationmeoftenthaninnerducksdid.Rotating16birdsthroughthe

5、positionsinafourduckrowtheresearchersfoundouterbirdshalfasleepduringsome32percentofdozingtimeversusabout12percentfbirdsininternalspots.“Webelievethisisthefirstevidencefananimalbehaviallycontrollingsleepwakefulnesssimulta

6、neouslyindifferentregionsofthebrain”theresearcherssay.Theresultsprovidethebestevidencefalongstingsuppositionthatsinglehemispheresleepevolvedascreaturesscannedfenemies.Thepreferencefopeninganeyeonthelookoutsidecouldbewide

7、spreadhepredicts.He’sseenitinapairofbirdsdozingsidebysideinthezooinasinglepetbirdsleepingbyamirr.Themirrsideeyeclosedasifthereflectionwereacompaniontheothereyestayedopen.Usefulashalfsleepingmightbeit’sonlybeenfoundinbird

8、ssuchwatermammals(哺乳動(dòng)物)asdolphinswhalesseals.Perhapskeepingonesideofthebrainawakeallowsasleepinganimaltosurfaceoccasionallytoavoiddrowning.Studiesofbirdsmayofferuniqueinsightsintosleep.JeromeM.SiegeloftheUCLAsayshewonder

9、sifbirds’halfbrainsleep“isjustthetipoftheiceberg(冰山)”Hespeculatesthatmeexamplesmayturnupwhenwetakeacloserlookatotherspecies.11.Anewstudyonbirds’sleephasrevealedthat________.Emily’stestshowsthattheseenergyfieldscan’tbedet

10、ectedevenbytrainedTTpractitioners(行醫(yī)者).ObviouslymindfulofthepublicityvalueofthesituationJournaleditGegeLundbergappearedonTVtodeclare“Agedoesn’tmatter.It’sgoodsciencethatmattersthisisgoodscience.”Emily’smotherLindaRosaare

11、gisterednursehasbeencampaigningagainstTTfnearlyadecade.LindafirstthoughtaboutTTinthelate‘80swhenshelearneditwasontheapprovedlistfcontinuingnursingeducationinColado.Its100000trainedpractitioners(48000intheU.S.)don’tevento

12、uchtheirpatients.Insteadtheywavedtheirhsafewinchesfromthepatient’sbodypushingenergyfieldsarounduntilthey’rein“balance.”TTadvocatessaythesemanipulationscanhelphealwoundsrelievePainreducefever.Theclaimsaretakenseriouslyeno

13、ughthatTTtherapistsarefrequentlyhiredbyleadinghospitalsatupto$70anhourtosmoothpatients’energysometimesduringsurgery.YetRosacouldnotfindanyevidencethatitwks.ToprovidesuchproofTTtherapistswouldhavetositdownfindependenttest

14、ing—somethingtheyhaven’tbeeneagertodoeventhoughJamesRihasofferedmethan$1milliontoanyonewhocandemonstratetheexistenceofahumanenergyfield.(He’shadonetakersofar.Shefailed.)AskepticmightconcludethatTTpractitionersareafraidto

15、laytheirbeliefsontheline.ButwhocouldturndownaninnocentfourthgraderSaysEmily:“Ithinktheydidn’ttakemeveryseriouslybecauseI’makid.”Theexperimentwasstraightfward:21TTtherapistsstucktheirhspalmsupthroughascreen.Emilyheldherow

16、nhoveroneoftheirsleftrightthepractitionershadtosaywhichhitwas.Whentheresultswererecdedthey’ddonenobetterthantheywouldhavebysimplyguessing.Iftherewasanenergyfieldtheycouldn’tfeelit.16.WhichofthefollowingisevidencethatTTis

17、widelypracticedA)TThasbeeninexistencefdecades.B)Manypatientswerecuredbytherapeutictouch.C)TTtherapistsareoftenemployedbyleadinghospitals.D)Methan100000peopleareundergoingTTtreatment.17.VeryfewTTpractitionersrespondedtoth

18、e$1millionofferbecause________.A)theydidn’ttaketheofferseriouslyB)theydidn’twanttorisktheircareerC)theywereunwillingtorevealtheirsecretD)theythoughtitwasnotinlinewiththeirpractice18.ThepurposeofEmilyRosa’sexperimentwas__