Scientistshaverecentlydiscoveredthatmotherstendtoholdtheirbabyontheleft．Of255right-handedmothers，83％heldthebabyontheleft．Andoutof32left-handedwomen，78％heldthebabyontheleftAsacontrol(参照实验)，womenwerewatchedcomingfromsupermarketscarryingbaby-sizedbags；thebagswereheldwithnosidepreference．

Then，dental(牙科的)patientsweregivenalargerubberballtoholdduringtreatment．Themajorityheldtheballtotheirleftside，evenwhenitwasinterruptedwiththedentist’sactivities．

Thissuggestedthatintimesofstressobjectsareheldagainsttheleftside．

Atthatpoint，somethingclearlycontrarywasobserved．Alargenumberofmotherswhobroughttheirpremature(早产的)babiestoaclinicwereseentoholdtheirbabiesagainsttheirrightside．

So，115motherswhohadbeenseparatedfromtheirbabiesfor24hoursafterbirthwereobservedforholdingresponse．Theexperimenterspresentedthebabydirectlytomidlineofthemother’sbodyandnotedhowsheheldthebaby．53％placedthebabyontheleftand47％ontheright．Anditwasalsonotedthatthemothersofthegroupwhohadheldtheirbabyonthelefthadalreadyhadababyfromwhichtheyhadnotbeenseparatedafterbirth．

Left-handedholdingenablesthebabytoheartheheartbeat．Inordertodiscoverwhetherhearingthehearthasabeneficialeffectonthebaby，thesoundofahumanheart-beatwasplayedto102babiesinaNewYorknurseryfor4days．Acontrolgroupofbabieswasnotexposedtoheart-beats．Thebabiesintheheart-beatgroupgainedmoreweightandcriedfarlessthanthebabiesinthecontrolgroup．

60．Scientistsfoundthat．

A．left-handedwomentendtoholdtheirbabiesontheright

B．moreright-handedwomenthanleft-handedwomentendtoholdtheirbabiesontheleft

C．onlyright-handedwomentendtoholdtheirbabiesonthecorrectside

D．womenwhoholdtheirbabiesontheleftarenearlyallright-handed

61．Whatdoestheunderlinedpart“someclearlycontrary”inthesecondparagraphmean?

A．Mothersofprematurebabiesheldtheirbabiesonthecorrectside

B．Mothersofprematurebabiestooktheirbabiestoaclinic．

C．Mothersofprematurebabieswereseentoholdtheirba