某同学的午餐是米饭、牛排、煎蛋、鱼汤,他需要补充的营养成分是

某同学的午餐是米饭、牛排、煎蛋、鱼汤,他需要补充的营养成分是(     )

A.维生素   B.糖类 C.脂肪 D.蛋白质

答案

A

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