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集合是近代数学中最基础最重要的一个概念,是研究函数的工具,也是高考必考的热点问题之一,学习集合最关键的是要吃透概念,才能避免因概念理解不深刻或有偏差而造成的解题失误,
Collection is the most basic and most important concept in modern mathematics. It is a tool for studying functions and is one of the hot topics for college entrance examinations. The key to learning a collection is to thoroughly understand concepts in order to avoid deep or biased understanding of concepts. The resulting missteps,