TheaverageAmericanchildspendsthreetofivehoursadaywatchi...
问题详情：TheaverageAmericanchildspendsthreetofivehoursadaywatchingTV.In1961,theaveragechildbegantowatchtelevisionatagethree;however,todayitisninemonths.Yet,mostparentsthinkthattelevisionhasbadinfluence...