Good sources of vitamins A and C, also contain fiber, folic acid(叶酸), vitamin E and iron. Aim for at least 5 servings per day. These provide protein, iron and B vitamins. Have 2 to 3 servings per day with plenty of variety. (3)Milk, Cheese and Yoghurt (4)Bread, Cereals, Pasta, Brown Rice, Noodles and Potatoes These provide protein, calcium and B vitamins. Have 2 to 3 servings per day and choose low fat varieties. These provide fiber, B vitamins (including folic acid) and some iron. Choose wholegrain varieties and have at least 5 to 6 serving per day.

　　This unit seeks to give students a better understanding of the issues involved in healthy eating. A healthy diet is one that has some energy-giving, body-building and protective foods every meal without too much fat, sugar and salt.

　　To help students identify food which are better for them, a traffic light system of grouping food into three categories has been included: Red (which should be eaten rarely), orange (which can be eaten in moderation) and green (which can be eaten all the time and as snack food).

　　Too much fatty food will mean they store extra energy in their bodies, while too much body-building food may cause problems for digestion and lead to illness unless enough fiber food is eaten to aid digestion; Too much protective food without energy-giving or body-building food can make you too thin and lacking in energy.

　　Flavors and tastes: sweet, salty, crispy, tasteless, spicy, sour

　　Ways of cooking: fry, roast, boil, barbecue

　　Vegetables: eggplant, carrot, pea, cabbage, radish, turnip, cucumber, mushroom

　　Fruits: grape, plum, mango, melon, lemon, pineapple

　　Meat: mutton, beef, kebab, bacon

　　Seafood: shrimp, crab, lobster

　　Diary food: cheese, cream, milk

　　Seasoning: mustard, pepper, garlic, sugar, vinegar

　　Staple food: noodle, spaghetti, bread, rice, corn

　　Drink: coffee, mineral water, tea, juice, wine, cola

The first period: Warming up and Reading

Healthy diet: a balanced diet contains enough amount of food for the three meals of a day a variety of foods such as vegetables, fruit, eggs, milk, cerials and meat. For breakfast, which starts you off on a long day`s work, you need enough food to provide you enough energy. Lunch is equally important. If you don`t store enough energy at lunchtime for a long afternoon of work, you will easily feel tired. But after dinner, normally you relax yourself and don`t need enough energy, so it is preferable to have a light dinner. Moreover, varieties of food give you different kinds of nutrients your body needs. If your diet lacks variety, you are bound to be deficient in nutrition. Your