问题补充：
If you go to a fast food restaurant, you will probably see a lot of teenagers. Today, many teenagers are overweight, and this is because of their bad eating habits. Most teenagers are fond of food with a lot of fat, oil, salt and sugar. People call this kind of food “junk food”.
But bad eating habits go beyond fast food. We find many teenagers eat unhealthily. Some don’t have breakfast before they go to school. During the day, some don’t have a proper meal for lunch. In a recent survey at one school, scientists found that over two thirds of the students didn’t follow a healthy diet. They didn’t like vegetables, and many of them didn’t like to eat fruits. They preferred to eat food with a lot of salt, sugar, or fat.
Parents today also worry about their children’s diet. Some doctors give the following advice:
Teenagers shouldn’t eat too much junk food.
Teenagers shouldn’t eat food with too much salt. Salt can cause high blood pressure in the future.
Teenagers should eat food without much fat, oil and sugar.
Teenagers need to eat some fruits and vegetables every day. Fruits and vegetables are rich in vitamins（维生素）and have little fat.
Teenagers need to drink more milk. Milk will help their bones grow.
Teenagers need to eat breakfast every day. It is good for their body and mind.
【小题1】How many pieces of advice are given by the doctors in the passage?A．FiveB．EightC．SixD．Seven【小题2】 Which of the following is RIGHT?A．Today all teenagers are overweight.B．Scientists found two thirds of the students didn’t have a healthy diet.C．Parents are worried about their children’s diet today.D．Milk, fruits and vegetables are not good for children.【小题3】 It’s right to according to the passage.A．eat junk foodB．eat food with too much saltC．drink milk and eat junk food often D．eat vegetables that are rich in vitamins【小题4】The main purpose of the passage is to tell the children.A．how to keep a healthy dietB．to eat fruits and vegetablesC．how to have a proper meal for lunchD．not to eat junk foodC
答案：
(答案→)C
解析：这篇文章讲述了如今孩子都喜欢吃垃圾食品，很多孩子都过于肥胖，文中医生给家长们提供了六条关于青少年如何健康饮食的建议。
【小题1】细节题。根据文章可知，医生给家长提供了6条关于健康饮食的建议。故选C
【小题2】细节题。根据文章可知，如今很多青少年都过于肥胖，科学家发现多于三分之二的学生没有一个健康的饮食，家长们很担心他们孩子的饮食，孩子们要多吃牛奶，水果和蔬菜。故选C
【小题3】细节题。根据文章可知，应该少吃垃圾食品，少吃盐，多喝牛奶，多吃蔬菜，蔬菜里含有丰富的维生素。故选D
【小题4】主旨题。这篇文章主要是告诉青少年如何养成一个健康的饮食习惯。故选A
