C
Researchers atWakeForestUniversityMedicalCenterdidaresearchinmonkeysanditcould provideaclue(提示)abouthowthebrainmanagesplentyofinformationandrememberswhatit
needs. Theyfoundthatwhenmonkeysweretaughttoremembercomputerartpictures,theirbrains reducedthelevelofinformationbysorting thepicturesintoseveralkinds forrecall,suchas pictures thathavetodowith “people”,“buildings”,“flowers”and“animals”.
Thebrainsortingcells(细胞)werefoundinthehippocampus(海马体),anareaofthe brainthatprocesses sensory(感官)information into memory. It’s important forremembering all things includingfacts,places,orpeople.It mightleadtosome memoryillness.
The researchers recorded the cell activity in the hippocampus while the monkeys were performingamemorytask.Eachmonkeywasshown one artpicture,and after 30seconds,picked it upfrom twotosixdifferentpicturesto geta juicereward.
Byrecordingcellactivityduringhundredsofthesetasks,theresearchersnoticedthatcertain cellsweremoreactivewhenthepictures hadthesimilarinformation,suchaspictures ofpeoplebut nototherobjects.
Theresearchers foundthat,however, thatdifferentmonkeyssortthesamepicturesdifferently. Forexample,withapictureofamaninabluecoat,somemonkeysplaceditinthe“people”, while othersplaceditinthe“coat”.
“Whenyouneedtoremember peopleyou’vejustmetatameeting,thebrainprobablydoesn’t memorize each person’s facial expressions,”says Sam, one of the researchers“Instead,itrecordsimportantinformationsuchastheirhairstyle,height,orage,alparts that we are familiar with from meeting people in general. Our research suggestshowthebrainmightdothis,whichcouldleadwaystoimprovememoryinhuman.Ifwecanunderstandhowthebrainworkswhendecisions aremade,wecanpredict when the brain will make a mistake ,and correct it. Thisfinding about howmuch informationis processedbythebrainwillhelpusachievethatgoal.”
76.FromParagraph1,wecanlearnthattheresearch ___________.
A.wasdoneata localhospitalwithmonkeysbyresearchers
B.wasaboutwhymonkeyslikecomputerartpictures
C.dividedmonkeysintoseveralkindsforrecall
D.couldprovideaclueabouthowthebrainmanagesinformation
77.Accordingtothepassage,whichofthefollowingis NOTtrueabouthippocampus?
A.It processessensoryinformationintomemory. B.It’sanareaofthebrainwith sortingcells.
C.Itis impossibletocausesome memoryillness.
D.It’sofimportanceformemorizingfacts,placesorpeople.
78.Accordingto Sam, whenweneedtorememberpeople,ourbrainprobablymemorize .
A.theirfacialexpressions B.theireyes,noses,mouths,etc
C.theirmannersofspeaking D.theirhairstyle,heightorage
79.Whatis the mainideaofthepassage?
A.Differentmonkeyssortthesame artpicturesdifferently.
B.Cellsweremoreactivewhenthepictureshadthesimilarinformation.
C.Newfindingsonmemorywillhelphumanknowmoreaboutbrain.
D.Monkeyswereperformingamemorytaskto geta juicereward.
80.Thepassageis mostprobablytakenfrom.
A.anewsreport B.a sciencemagazine C.asciencefiction D.aneducationbook
非选择题部分 共45分
Ⅶ.选词填空(10分)
A.阅读短文，从方框中选择适当的单词填空(每词限用一次)。
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long name loved them under |
Onceinaprettyprimaryschoolthereweretwoboys,whowerecalledTidyTomandDirty
Dan.Letmetell youhowTomgothis(81) ______________.
Everymorning,hewokeupveryearly.Beforebreakfast,hebrushedhisshoestomake(82)shine,andthencarefullybrushedallthedustfromhiscoattohistrousers.Afterthat,he washedhishandsandhisface,andtookhisbreakfast.Then,takinghisbooks(83) his arms,hestartedofftoschool.Hehada(84) waytogo,buthewasalwaysthereintime. He(85) hislessonsandhewascleanandtidy.SotheboyscalledhimTidyTom.Learn thislittle lessonaswellasyou canbetidylikeTom,notdirtylikeDan.
，我们将会及时处理。
