Ifyouwanttoimproveyourchild’sresultsatschool,youcoulddoalotworsethanensuringthattheydoplentyofexercise.Scientistshavealreadyshownthatphysicalactivitycanmakeyoubrainier.ButateaminAmericahasusedscansto
Ifyouwanttoimproveyourchild’sresultsatschool,youcoulddoalotworsethanensuringthattheydoplentyofexercise.Scientistshavealreadyshownthatphysicalactivitycanmakeyoubrainier.ButateaminAmericahasusedscanstoshowthatanimportantpartofthebrainactuallygrowsinchildrenwhoarefit.Theseyoungsterstendtobemoreintelligentandhavebettermemoriesthanthosewhoareinactive.
Scientistsalsofoundthatoneofthemostimportantpartsoftheirbrainswas12percentlargerthanthoseofunfitchildren.Theybelievethatencouragingchildrentotakeexercisefromaveryyoungagecouldhelpthemdobetteratschoollater.ResearchersfromtheUniversityofIllinois,intheU.S.,studiedthebrainsof49childrenagednineandtenusingamagneticresonanceimagingscan(核磁共振摄影扫描),atechniquewhichprovidesverydetailedpicturesoforgansandtissuesinthebody.
Theyalsotestedthefitnesslevelsofthechildrenbymakingthemrunonatreadmill(跑步机).Thescientistsfoundthatthehippocampus,apartofthebrainresponsibleformemoryandlearning,wasaround12percentlargerinthefitterchildren.
ProfessorArtKramer,wholedthestudypublishedinthejournalBrainResearch,saidthefindingshadimportantimplicationsforencouragingindividualstotakepartinsportfromayoungage.“Weknewthatexperienceandenvironmentalfactorsandsocioeconomicstatusallimpactbraindevelopment,”hesaid.“Ifyougetsometerriblegenesfromyourparents,youcan’treallyfixthat,andit’snoteasytodosomethingaboutyoureconomicstatus.Buthere’ssomethingthatwecandosomethingabout.”
小题1:Ifyouwanttoimproveyourchildren’sresultinschool,____________.A.itisworsetoensurethattheydoplentyofexerciseB.youcanhavetheirbrainscannedC.itcouldbebettertomakesurethattheydoalotofexerciseD.youcandoalotexceptensuringthattheydoexercise小题2:Accordingtothepassage,whichofthefollowingstatementsisNOTtrue?A.Thefitnesslevelofthechildrenislinkedtotheirintelligence.B.Childrenwhohavealargerhippocampuswillprobablyhavebettermemories.