Six nutrients needed by human body: protein, sugar, oil, vitamins, inorganic salts and water; Combined with the meaning of the question, rice is rich in starch and belongs to sugar; Tofu and braised pork contain oil, protein and inorganic salts. It is known that there are few vitamins in food. In order to make the nutritional collocation more reasonable, it is necessary to supplement foods rich in vitamins, such as fruits and vegetables.

So the answer is: rice; Vegetables and so on.