The main energy foods are the carbohydrates{碳水化合物}。These are sugars and starch{淀粉}. Wheat and rice are rich in starch and fruits and vegetables contain _ _amount of sugar, honey and jam are also rich in sugar. Like carbohydrates fats are food that provides energy. Butter, certain types of fish, eggs are rich in fats. fats can be stored in various parts of the body as ___ of energy. Because fats in general are slowly ___, they satisfy hunger for long periods. Proteins{蛋白質(zhì)} are very complex___. The body needs proteins for the growth of new cells and for the repair and ___ of old cells. Foods rich in proteins are ___to a balanced diet. Milk, some vegetables, meat, chicken, fish, cheese are some foods rich in proteins. A good diet will certain a ___of foods so that the body contains all the minerals It needs for good health. Vitamins are necessary for the ___working of the body. Water ___up about 70 percent of the weight of the human body. The average adult needs about two liters of water daily to replace the water the body ___. A loosen I induced B variety J identical C makes K reserves D proper L digested E loses M considerable F preserves N diversity G essential O replacement H substances