"students give cards or flowers to their teachers" 中为什么用“or”而不用“and”?
问题描述：
"students give cards or flowers to their teachers" 中为什么用“or”而不用“and”?
答
如果用and意思就是：学生们既送老师贺卡又送老师鲜花（事实不是）,用or就是说：…………贺卡或鲜花…….