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有许多单一选择题(又以单项选择题,即所提供的选项只有一项是正确的选择题,简称单选题)。如果我们能用特殊值代入题目所提供的选项,或者根据特殊值算得(或推得)一些结果,能够否定除某选项外的其它选项,那么此选项必然是正确答案,我把这种方法称为“特殊值法”,用特殊值法解这类单一选择题,显得十分简便,且能提高辩证思维能力,现举数例。
There are many single-choice questions (individual multiple-choice questions, that is, only one of the options provided is the correct multiple-choice question, or simply single-choice question). If we can use special values to substitute the options provided by the topic, or to calculate (or push) some results based on a particular value, we can deny anything other than an option. This option must be the correct answer. I call this method the correct answer. For the “special value method”, using a special value method to solve such single choice questions is very simple and can improve the ability of dialectical thinking.