With the entrance examination just around the corner, parents are trying their best to strengthen nutrition for their children. A classmate's lunch recipe is as follows: staple food: rice; Side dishes: braised pork ribs and fried eggs. Rice is rich in sugar, braised pork ribs, fried eggs, fried chicken legs and bean curd soup are rich in protein and oil, and fried pork liver is rich in vitamins. However, there are few vitamin foods, so vegetables and fruits should be supplemented as side dishes.

So, the answer is: rice; Vitamin; Vegetables or fruits.