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二、同类互换,调配丰富多彩的膳食人们吃多种多样的食物不仅是为了获得均衡的营养,也是为了使饮食更加丰富多采以满足人们的口味享受。假如人们每天都吃同样的50克肉、40克豆,难免久食生厌,那么合理营养也就无从谈起了。宝塔包含的每一类食物中都有许多的品种,虽然每种食物都与另一种不完全相同,但同一类中各种食物所含营养成分往往大体上近似,在膳食中可以互相替换。应用平衡膳食宝塔应当把营养与美味结合起来,按照同类互换、多种多样的原则调配一日三餐。同类互换就是以粮换粮、以豆换豆、以肉换肉。例如大米可与面粉或杂粮互换,馒头可以和相应量的面条、烙饼、面包等互换;大豆可与相当量的豆制品或杂豆类互换;瘦猪肉可与等量的鸡、鸭、牛、羊、兔肉互换;鱼可与虾、蟹等水产品互换;牛奶可与羊奶、酸奶、奶粉或奶酪等互换。
Second, the exchange of similar, deployment of rich and varied meal People eat a variety of food not only in order to obtain a balanced nutrition, but also to make the diet more abundant to meet the tastes of people to enjoy. If people eat the same 50 grams of meat every day, 40 grams of beans, it is inevitable long-eaten raw, it is impossible to talk about reasonable nutrition. The pagoda contains many varieties of each type of food. Although each type of food is not exactly the same as the other, the nutrients in the same type of food are often roughly similar and can be replaced in the diet. The application of balanced diet pagoda should be combined nutrition and delicious, according to the exchange of similar, a variety of principles deployment of three meals a day. The same kind of exchange is based on food for grain, beans for beans, meat for meat. For example, rice can be exchanged with flour or cereals, bread can be exchanged with the corresponding amount of noodles, pancakes, bread, etc. Soybean can be exchanged with a considerable amount of soy or miscellaneous beans; lean pork can be mixed with the same amount of chicken, duck , Cattle, sheep, rabbit swap; fish can be exchanged with shrimp, crab and other aquatic products; milk with sheep milk, yogurt, milk powder or cheese interchangeable.