赵对学生们说：“Now, we divide into groups and see which group can classify the garbage most accurately.（现在，我们分组进行，看看哪个小组能最准确地分类垃圾。）” 学生们积极投入到竞赛中，有个小组在分类时出现了一些混淆。小赵耐心地解释：“No, this plastic bag should be put in