四,阅读短文,完成下列题目.

四,阅读短文,完成下列题目.
American children love watching TV.Some of them spend six hours a day at school and four to six hours a day infront of the television set.Some of them even watch for eight hours or more on Sundays.Televisions are like books or films.
A child can learn bad things and good things from TV.Some shows help children learn to do a lot of housework,just like gradening,cooking ang cleaning.But some programs are not good for children.So parents must help them choose the right ones to enjoy.回答下列问题.
6.How many hours do children spend at school in America?___________________________________________________________________
7.What are televisions like in America?___________________________________________________________________
8.Are all the programs good for children?___________________________________________________________________