A
Teenagers who spend hours in front of the television may have a poorer diet as young adults.
A study, which involved nearly 1,400 high school students found those who watched TV for five hours or more every day had less healthy diets than other students five years later. Why does this happen? Should the parents take any measures?
On the one hand, people who spend a lot of time in front of the TV, especially teenagers, may snack (吃零食) more, and that may influence their longterm diet quality.
On the other hand, TV ads for fast food, sweets and snacks make teenagers eat more of those foods. TV time might also replace exercise time for some kids.
The researchers found a clear relationship between TV time during high school and diet quality of the young. While the heaviest TV viewers were eating the most junk food, those who'd watched fewer than two hours every day had the most fruits and vegetables.
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.
【语篇解读】 本文是一篇说明文。文章介绍了看电视时间和饮食质量的关系。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。
1．According to the passage, heavy TV viewers are easy to .
A．eat more fruits
B．eat fewer vegetables
C．eat less junk food
D．eat more food high in calcium(钙)
B [细节理解题。由第五段“While the heaviest TV viewers were eating the most junk food，those who'd watched fewer than two hours every day had the most fruits，vegetables”．可知，沉迷于电视的观众吃的是垃圾食品，但那些每天看不到两小时电视节目的观众对水果、蔬菜的摄入量最高。所以沉迷于电视的人很少吃蔬菜。故选B项。]
2．The underlined word “curbing” in the last paragraph can be replaced by “ ”．
A．adding B．checking
C．controlling D．stopping
C [词义猜测题。由最后一段“And parents should set a good example by eating right，being physically active and curbing their own TV time.”可知，父母要做一个好的榜样，要积极地锻炼身体并且要控制自己看电视的时间。所以通过上下文的语境可以判断出，最后一段中带下划线的“curbing”可以替换为controlling“控制”。故选C项。]
3．What suggestion does the author give the parents?
A．They must watch TV with their children.
B．They should stop the children from watching TV.
C．They should pay attention to nutrition in diets.
D．They can't do what they don't want their children to do.
C [推理判断题。由最后一段“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，就作者而言，孩子们每天看电视的时间不应超过两个小时，家长们应该通过自己的健康饮食，积极锻炼身体，减少自己看电视的时间来以身作则。所以通过关键词“set a good example by eating right，being physically active and curbing their own TV time.”可以判断出，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D项。]
