题目内容

牙防小分队进驻某小学后，与校领导和卫生老师一起研究了口腔保健工作计划，准备开展工作培养口腔卫生习惯最主要的是（）。

A. 有效刷牙，去除菌斑
B. 牙线使用方法
C. 牙签使用方法
D. 少吃零食
E. 多吃水果蔬菜

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