ResearchersfoundthatcomparedwithteenswhospentmuchoftheirfreetimeinfrontofTVsetsthosewhowerephysicallyactiveoftenhadhigherself-respectbettergradesandwerelesslikelytohaveriskybehaviorliketakingdrugssmokingordrinking．Thefindingsbasedonanationalsurveyofnearly12000middleandhighschoolstudentswerepublishedinajournal．

"AcrosstheboardchildrenwhoengagedinanykindofactivitywerebelieroffthankidswhowatchedalotofTV"saidstudycoauthorprofessorPennyGordonLarsenoftheUniversityofNorthCarolina．

Otherstudieshavelinkedcertaincontentoftelevisionprogramssuchasviolenceandsextochildren'sbehavior．ButbeyondthisissueGordon-LarsensaidthatkidswhospendhourswatchingTV"missopportunities"todevelopskillslearnteamworkandhaveotherexperiencesthattheirmoreactivepeersbenefitfrom．

Thatdoesn'tmeanhoweverthatkidshavetobeonthefootballteam．Thestudyfoundthatsomeactivitieslikeskatingandskateboarding——whichadultssometimesfrownupon——werealsorelatedtobetterselfrespectandlessrisktaking．

ThatskaterswerebetterbehavedthanTVwatchersmightcomeasasurprisetosomeadultswhoconsidertheseteenstobebadaccordingtoGordon-Larsen．Skateboardingisforbiddeninmanypublicareasandsomecommunitiesopposebuildingskatingparks．Butifkidswholiketoskatehavenowheretodoit"it'sashame"saidGordon-Larsen．

Notonlyshouldparentsencouragetheirkidstoengageiiithephysicalactivitiestheyenjoyshesaidbutschoolsandcommunitiesshouldalsodomoretocreateopportunitiesforchildrentobeactive．

1.Fromthepassageweknowthat .

A．physicallyactivekidsgetintolesstrouble

B．moreskatingparksarebeingbuilt

C．kidswhospendhourswatchingTVbenefitalot

D．kidswhohavenowheretoskatetendtotakedrugs

2.Ifyourkidisafootballplayerheismorelikelyto____

A．getintothehabitofsmokingordrinking

B．developteamworkspirit

C．haveriskybehaviors

D．failintheschoolwork

3.Thispassageismainlywrittento___ ．

A．offersomeinformation