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数学选择题一般都是有且仅有一个正确选项.解选择题的方法很多,特例法是其中一种重要的方法.用特例法解选择题具有思路清晰、过程简捷等优点,常能收到事半功倍的良好效果.下面通过实例
Mathematics multiple-choice questions generally have one and only one correct option. There are many ways to solve multiple-choice questions. Special case method is one of the important methods. Using special cases to solve multiple-choice questions has the advantages of clear thinking, simple process, etc. Good results with less effort. The following examples