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学龄儿童生长发育迅速，正处于代谢旺盛的时期，保证供给足够的热能和各种营养素十分重要。据资料表明，目前小学生多数存在早餐的热能、蛋白质摄入不足。，上午第二节课后出现饥饿、疲劳、注意力分散的现象较为普遍[1]，甚至有发生血糖过低沉象。影响了儿童的健康和学习效果［
School-age children grow rapidly, is in a period of strong metabolism, to ensure adequate supply of heat and nutrients is very important. According to statistics, at present the majority of primary school students have breakfast energy, protein intake inadequate. In the morning after the second class, hunger, fatigue and distractions were common (1), and even hypoglycemia occurred. Affect children’s health and learning outcomes [