5. Match each word with its definition. Then complete the passage using the four words.

 （老师或学生1读出词语解释，其他学生一起说出所描述的单词， 学生2读出段落填词）

6. Listen and follow

III. Post-reading

1. What do you often eat at every meal? Do a survey and compare your eating habits with those of your classmates.(调查报告：通过比较同学与自己的饮食差别，引导学生选择健康饮食，花瓣)

2.Read and catch the main ideas.(阅读并小结每段大意、花瓣)·j·y

Scientists have learned a lot about the kinds of food people need. They say that there are some kinds of food that people should eat every day. They are (1) green and yellow vegetables of all kinds; (2) citrus fruits and tomatoes; (3) potatoes and other fruits and vegetables; (4) meat of all kinds, fish and eggs;(5) milk and foods made from milk;(6) bread, cereal or rice; (7)  butter or something like butter.
     People in different countries and different places of the world eat different kinds of things. Food are cooked and eaten in many different kinds of ways.  People in different countries eat at different times of the day.  In some places people eat once or twice a day; in other countries people eat three or four times a day.  Scientists say that none of the differences is really important.  It doesn't matter whether foods are eaten raw or cooked, canned or frozen.  It doesn't matter if a person eats dinner at four o'clock in the afternoon or at eleven o'clock at night.  The important thing is what you eat every day.
      There are two problems, then, in feeding the large number of people on earth.  The first is to find some way to feed the world's population so that no one is hungry. The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.

3.Talk about “How to Stay Healthy?”(讨论展示、花瓣)