阅读理解Theybabyisjustonedayoldandhasnotyetlefthospital．Sheisquietbutalert(警觉)．Twentycentimetersfromherfaceresearchershaveplacedawhitecardwithtwoblackspotson

　　阅读理解

　　Theybabyisjustonedayoldandhasnotyetlefthospital．Sheisquietbutalert(警觉)．Twentycentimetersfromherfaceresearchershaveplacedawhitecardwithtwoblackspotsonit．Shestaresatitcarefully．Aresearcherremovesthecardandreplacesitbyanotherthistimewiththespotsdifferentlyspaced．Asthecardschangefromonetotheotherhergaze(凝视)startstoloseitsfocus－untilathirdwiththreeblackspotsispresented．Hergazereturns：shelooksatitfortwiceaslongasshedidatthepreviouscard．Canshetellthatthenumbertwoisdifferentfromthreejust24hoursaftercomingintotheworld?

　　Ordonewbornssimplyprefermoretofewer?Thesameexperimentbutwiththreespotsshownbeforetwoshowsthesamereturnofinterestwhenthenumberofspotschanges．Perhapsitisjustthenewness?Whenslightlyolderbabieswereshowncardswithpicturesofobjects(acombakeyanorangeandsoon)changingthenumberofobjectshadaneffectseparatefromchangingtheobjectsthemselves．Coulditbethepatternthattwothingsmakeasopposedtothree?Noagain．Babiespaidmoreattentiontosquaresmovingrandomlyonascreenwhentheirnumberchangedfromtwotothreeorthreetotwo．Theeffectevencrossesbetweensenses．Babieswhowererepeatedlyshowntwospotsbecamemoreexcitedwhentheythenheardthreedrumbeatsthanwhentheyheardjusttwo;likewise(同样地)whentheresearchersstartedwithdrumbeatsandmovedtospots．

　　(1)

　　TheexperimentdescribedinParagraph1isrelatedtothebaby's________．

　　[]A．

　　senseofhearing

　　B．

　　senseofsight

　　C．

　　senseoftouch

　　D．

　　senseofsmell

　　(2)

　　Babiesaresensitivetothechangein________．