【正文】
ium too. Do you know that green vegetables also have a lot of calcium? What else contain calcium? Cheese ,butter,and yogurt. We often hear someone says he likes or dislikes eating something. Is he right? How shoud we eat? We must eat food from each group. And have a balanced diet. Do you know die? Why do we need to have a balanced diet? Diet is the things we eat everyday. 1,foods from grain, 2, fruit and vegetables, 3, protein foods, 4,calcium foods. Now can you say the four main food groups? What do we get from each group? Please think and discuss how to keep healthy ?You can use the following words and phrases。What is the most inportant in ourlife?