我国大约有小学生一亿人 ,他们正处于生理和心理发育的重要阶段 ,而合理的营养是正常生长发育的基础。在经济条件不好的家庭中 ,不少儿童存在营养不良 ;但在经济条件好的家庭中 ,由于缺乏营养知识 ,专门为子女购买昂贵却不是学生需要的所谓“高级营养品”而造成子女营养不良。? About 100 million primary school students in China are in an important stage of their physical and mental development, and proper nutrition is the basis for their normal growth and development. Many families with poor economic conditions have malnutrition. However, in economically disadvantaged families, children’s nutrition is often caused by the lack of nutritional knowledge and the purchase of so-called “advanced nutrition products” that are especially expensive for their children bad. ?