大学英语四级考试听力预测试题(15)_大学英语听力

　　and how much of these substances we need to be healthy.

　　In other words,it isnt enough just to eat

　　we must take in enough of each type of food substance for a specific purpose.

　　Protein food such as milk,eggs,cheese

　　meat and fish contain large quantities of the kind of material the body needs to build cell

　　The body cannt make new cells without proteic.

　　Carbohydrates are foods which have a large quantity of starch or sugar

　　such as potatoes,flour,rice,and sugar.

　　They are important to the body because they keep it warm and give it energic .

　　Almost all foods also have some fat

　　and fat is the most concentrated energy-giving food the body needs.

　　17. What should we do if we want to keep our bodies alive?

　　18. What is necessary for the body to make new cells?

　　19. What kind of food does flour belong to?

　　20. Why are carbohydrates important to the body?

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