Reasonable nutrition refers to the balance between various nutrients ingested from food and the human body's demand for these nutrients, neither lacking nor excessive. According to the balanced diet pagoda, the balanced intake of five foods and the needs of human body, most of the balanced diet pagodas are whole grains. Reasonable nutrition also includes a reasonable dining system and scientific recipes. Eat three meals a day on time, and the energy intake of breakfast, lunch and dinner accounts for 30% and 40% respectively. Scientific recipes should not only pay attention to the proper proportion of nutrients, but also pay attention to the reasonable distribution of calories. The lack of some nutrients will cause nutritional deficiency, and the diseases caused by nutritional deficiency and overnutrition are collectively called malnutrition, which is the consequence of unreasonable nutrition and is very harmful to health.

So the answers are: porridge, steamed bread, steamed bread, potato chips, soybean milk, milk and eggs.

So choose: a