集合是高中数学中最基本的概念之一,也是进一步学习其他数学知识的重要基础.在历年高考中,集合问题常以选择题或填空题的形式出现,主要考查集合的相关概念、集合间的基本关系、集合的基本运算等,但在平时的学习中,学生往往不能深刻理解这些知识,导致考场上出现各式各样的 The collection is one of the most basic concepts in high school mathematics and is also an important foundation for further learning of other mathematical knowledge.In the past years of college entrance examination, the problems of the collection often appear in the form of multiple choice questions or blank questions, mainly examining the related concepts of the collection, Basic relations, the basic operations of the collection, etc., but in normal learning, students often can not profoundly understand this knowledge, resulting in a variety of examination room