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集合是现代数学的基础,它与高中数学的许多内容有着广泛的联系,作为一种思想、语言和工具,集合的知识已经渗透到自然科学的众多领域．它是高中阶段数学的第一个内容,集合概念抽象,符号术语多,对于初学集合的同学来说,常常因为概念不清晰,理解不透彻,解题思路不严谨,容易造成错误．针对学习中的薄弱环节,本文列出易忽视之处,希望能帮助同学们加深理解,提高学习效果．
Collection is the foundation of modern mathematics. It has extensive connections with many aspects of high school mathematics. As an idea, language, and tool, the collective knowledge has penetrated into many fields of natural science. It is the first content of high school mathematics, the collection of abstract concepts, symbolic terminology, for the beginner collection of students, often because the concept is not clear, understanding is not thorough, problematic ideas are not rigorous, easy to cause errors. For the weak links in learning, this article lists the areas that are easily overlooked, hoping to help the students deepen their understanding and improve the learning effect.