Junk food， such as candy and soda， has lots of fat， salt and sugar， but few nutrients.
　　Junk food is very popular in the world because it is cheap to make. It doesnt cost much money. Almost every child likes to eat junk food， but eating a lot of sugar is not healthy. It can even make you sick. Most junk food has food additives， so it looks and tastes better. Junk food is bad for our health， especially for young children. It may lead to overweight， heart diseases and many other health problems. When children eat lots of junk food， they dont have enough milk or healthy fruit juices. This is bad for their health. In order to keep healthy， wed better eat lots of vegetables and fruits.
　　I. 词语拓展
　　用下列词语的适当形式完成句子。
　　nutrient 营养物质; sick 生病; additive 添加剂; lead to overweight 导致肥胖
　　1. Food  are bad for our health.
　　2. Vegetable contain （包含） many .
　　3. Eating too much can .
　　4. Lucy didnt go to school yesterday because she was .
　　II. 阅读训练
　　根据短文内容，回答下列问题。
　　1. What is a soda？
　　2. What is bad about junk food？
　　3. What does the text suggest （建議） about vegetables？