A．They must watch TV with their children.

B．They can't do what they don't want their children to do.

C．They should forbid the children to watch TV.

D．They should pay attention to nutrition in diets.

【答案】　B　细节题。根据As far as I am concerned，children should watch no more than two hours of television per day.And parents should set a good example by eating right，being physically active and curbing their own TV time.可知作者给父母的建议是，他们不想让孩子做的事情，自己也不要去做。故选B。

3．The underlined word " curbing" in the last paragraph can be replaced by " ________ "．

A．adding B．stopping

C．checking D．controlling

【答案】　D　猜词题。根据As far as I am concerned，children should watch no more than two hours of television per day.And parents should set a good example by eating right，being physically active and curbing their own TV time.可知这里意思是父母要做一个好的榜样，要积极并且要控制自己看电视的时间。猜出"curbing"的意思是控制。故选D。

4．According to the passage，heavy TV viewers tend to ________.

A．take in fewer vegetables

B．eat more fruits

C．eat less junk food

D．take in high－calcium food

【答案】　A　细节题。根据While the heaviest TV viewers were eating the most junk food，those who'd watched less than two hours per day had the highest intake(吸收)of fruits，vegetables，whole grains and high－calcium food.In her opinion，parents should limit and monitor TV viewing.可知沉迷于电视的人很少吸收蔬菜。故选A。