On the first day of the senior high school entrance examination, my mother designed a lunch recipe for Xiaoming: rice, braised crucian carp, shredded spicy chicken and Pleurotus eryngii with black pepper. Which of the following should you add? A

Analysis of test questions: Balanced diet refers to the proper proportion and reasonable collocation of various nutrients, so that people can obtain comprehensive and balanced nutrition. The main nutrients needed by human body are: sugar, fat, protein, water, inorganic salts and vitamins. In this recipe, the main ingredient of rice is sugar, the main ingredients of braised crucian carp and shredded spicy chicken are protein and fat, and the main ingredient of Pleurotus eryngii is protein. According to the requirements of a balanced diet, you must also

So choose: a