Regularchildcareprovidedoutsidehomeorbysomeoneotherthanthemotherdoesnotinitselfundermine(削弱)healthyemotionalconnectionsbetweenmothersandtheir15-month-oldinfants(幼儿)accordingtoalong-termnationalstudy.Thefindingholdsevenifcarebeginsduringthefirst3monthsafterbirthandrunsfor30hoursormoreperweek.
Amonginfantswhoreceiveunkindandunresponsivecarefromtheirmothershoweverthemother-carerelationshipmaybedamaged."Thisresearchhelpsusputapartcomplexitiesregardingchildcarethathavenotpreviouslybeenstudiedindetail"contends(主张)JayBelskyapsychologistatPennsylvaniaStateUniversity.Belskyandseveralofhiscolleaguesannouncedtheirfindingslastweekattheinternationalconference.
Theinvestigationconsistsof1153childrenandtheirfamilieslivinginornearBoston.Theyoungstersnomorethan1montholdwhenenteredthestudyin1991willbetrackeduntiltheageof7.Experimentersgavequestionnairestomothersintheirhomesandvideotapedbabycaretaker’sinteractingwiththekidsatages16and15months.Independentobserversratedthequalityofeachchildcareeffortsandnotedinfantnervousness.Unlikemostpreviousstudiesthisoneallowsresearcherstoobserveeachcaretaker’spersonalityatchildnursingandkid’semotionalreactionbytheequipment.Aftertakingfamilyfactorsintoconsiderationotherpsychologistsstatethattheresearchersfoundnorelationbetweenthequalityofchildcareandinfant’sresponse.Buttheexperimenterscontendthattheboyswhospentmorethan30hoursperweekinchildcareexhibitedmoreemotionfortheirmothersthanotherboyswhodidn’tandthegirlswhospentthesamehoursperweekinchildcareshowedamodest(适度的)riseinthisemotion.Thereforequalityofchildcareoutsidehomeplaysanimportantroleintheconnectionbetweenmothersandinfants.
55.Fromthefirstparagraphweknowthat_____.
A.mothercareisthebestaccordingtoanationalstudy
B.childcareoutsidehomeisthebestinaccordancewiththestudy
C.regularchildcareoutsidehomemayplayaroleasamother
D.connectionsbetweenmothersandinfantsaredamagedbyoutsidecare
56.Accordingtothepassageunresponsi