【Afour-yearstudydonebytheInfant（幼儿）TestingCenterinSanFrancisco，California，suggeststhatbabiesfeelmorecomfortablearoundotherbabiesthanwithstrangeadults.Accordingtothestudy，babiesbenefitbybeingwith】

　　Afour-yearstudydonebytheInfant（幼儿）TestingCenterinSanFrancisco，California，suggeststhatbabiesfeelmorecomfortablearoundotherbabiesthanwithstrangeadults.Accordingtothestudy，babiesbenefitbybeingwiththeirfellowinfantsdaily.Whileontheotherhand，ababymightshowfearofanadultstranger，heislikelytosmileandreachoutforanunfamiliarinfant.Bythetimebabiesareoneyearold，theyhavebeguntoformfriendshipsofasort.

　　Theabovefindings，basedonobservation（观察）of100babiesagedthreemonthstothreeyears，mightproveinterestingtoworkingparentswhomustfinddaycarefortheirbabies.Familycareinaprivatehome，withseveralbabiestogether，isprobablytheidealwaytocareforbabiesunderthree.DrBenjaminSpocks，well?knownpediatrician（儿科医生）andauthorofbooksaboutbabies，supportstheidea.Hesaysthatfamilydaycareissounder（有理由的）intheorythanhiringahousekeeperorababysitter.

　　1.Whichofthefollowingdoesababyliketobewithbest？

　　A.Housekeeper.B.Afellowbaby.C.Anadultnearby.D.Ateenager.

　　2.Itseemsthatababymaybegintohavefriendswhen_________.

　　A.itisbornB.itisafewmonthsold

　　C.itisthreeyearsoldD.itissixyearsold

　　3.Whatdoesthe“familydaycare”refertointhelastsentence？

　　A.Lettingababyalone.B.Hiringababysitterforababy.

　　C.Havingseveralbabiestogether.D.Hiringahousekeeperforababy.