“The point is，this is something that is as effective as other things we do to try to guide behavior in children，and it’s fairly simple，” Christakis said.

　　Another study published in Pediatrics found the more TV kids and teens watched，the more likely they were to have a crime or other problems in society.Children may imitate violence they see—or more time in front of the TV could simply mean less communication with peers and families，and worse performance in school.

　　The American Academy of Pediatrics recommends kids watch no more than one to two hours of high­quality programming each day.Researchers agreed parents should be mindful of what exactly their young kids are watching on TV as well.“It’s

　　not just about turning the TV off，it’s about changing the channel，” Christakis said.

　　1．What is the positive effect of high­quality TV shows on kids?

　　A．Good learning results and relationships.

　　B．Being affected by violence.

　　C．Spending less time on TV programming.

　　D．Encouraging them to turn on the TV.

　　2．For Christakis，what is more concerning?

　　A．Kids watching too much TV.

　　B．TV shows being of poor quality.

　　C．Kids watching too many cartoons.

　　D．Parents receiving no guidelines.

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