煤燃烧特性

Eating is important to everyone.  1 
“Fast food is easy,” says Sarah Hudson, a 14-year-old high school student from the U.S.A. she is enjoying her lunch at McDonald’s. “It’s quick and delicious.” She eats fast food about twice a week.
Now each American eats about three hamburgers and four bags of French fries(or potato chips) every week. That is 2 520 calories(卡路里).  2 
Most Americans know that fast food isn’t good for them. But it seems that they can’t give it up.  3 and fast food restaurants are part of American life,96﹪ of American school children know McDonald’s   4  In America,33﹪ of them are overweight (or too heavy).That makes it hard for them to move around, go upstairs and even breathe.
   5 Of course it’s not just young people who are getting heavier. It’s all Americans.

A. They will probably have health problems later in life.

B. In fact, more and more people are eating fast food.

C. But not many people have time to think about what to eat.

D. Because they love the French fries, it’s no surprise that children are getting heavier.

E.A person needs about 2 000 calories for a whole day.