“任意”性与“存在性”问题是最近几年的高考及模拟命题的重点和热点.如何处理这类问题一直是学生头痛的问题,感到无从下手.本文从几道题出发,阐述这类问题的解法,供大家参考.一、“任意”性问题 “Any” and “Existence” is the focus and hotspot of college entrance examination and simulation proposition in recent years.How to deal with this kind of problem has always been a problem of students’ headaches and felt that it is impossible to get started.This article starts from a few questions Explain the solution of such problems for your reference. First, “arbitrary ” sexual problems