【EveryhourspentinwatchingTVDVDsandvideosasanadultreduceslifespanbyalmost22minutesastudysuggests.AndviewingTVforanaverageofsixhoursadaycancutshortyourlifebyfiveyears.Theresearchshowsthatasedentary】
EveryhourspentinwatchingTVDVDsandvideosasanadultreduceslifespanbyalmost22minutesastudysuggests.AndviewingTVforanaverageofsixhoursadaycancutshortyourlifebyfiveyears.
Theresearchshowsthatasedentary（久坐的）lifestyleisasbadforhealthassmokingandobesitybecauseofthedangerscausedbyinactivityandthegreateropportunitiesitoffersforunhealthyeating.
Theresearcherssetouttocalculatetheoverallrisktolifespanfromwatchingtelevision.Theirresearchinvolvedmorethan11000peopleovertheageof25.
WritingintheBritishJournalofSportsMedicinetheyconcluded."TVviewingtimemaybeconnectedwithalossoflifewhichissimilartoothermajorchronicdiseaseriskfactorssuchasphysicalinactivityandobesity."
TheresearchersfromtheUniversityofQueenslandusedinformationfromtheAustralianDiabetesObesityandLifestyleStudytogetherwithpopulationanddeathratedata.
Buttheysaid:"AlthoughweusedAustraliandatatheeffectsinotherindustrializedanddevelopingcountriesarelikelytobesimilarconsideringthelargeamountsoftimespentwatchingTVandsimilaritiesindiseasepatterns."IntheUnitedKingdomtheaverageamountoftimespentwatchingTVisfourhoursadaycomparedwithfivehoursintheUnitedStates.
Earlierthisyearaseparatestudysuggestedtheriskofdevelopingdiabetesandheartdiseaseordyingearlyrisesbyasmuchas20percentafterjusttwohoursadayinfrontofthebox.
England'sChiefMedicalOfficerSallyDaviessaid:"Physicalactivityoffershugebenefitsandthesestudiesbackwhatwealreadyknow-thatasedentarylifestylecarriesadditionalrisks.Wehopethesestudieswillhelpmorepeoplerealizethattherearemanywaystogetexercise."
1.Wecanlearnfromthepassagethat______.
A.whetheryouwatchTVornothasnothingtodowithhowlongyouwilllive
B.ifanadultwatchesTVforsixhourseverydayhewillprobablydiefiveyearsearlier
C.physicalinactivityandobesitywon'tshortenyourlife
D.asedentarylifestyleoffershugebenefits
2.Thepassageimpliesthat______.
A.ThelongeronewatchesTVeverydaythe