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化学多选题是一种智、能并重的题型,融知识性、灵活性和隐蔽性于一体,并从多角度、多层次考查学生分析问题和解决问题的能力,故学生在答题时经常出现错解和漏解.究其原因,除了学生在知识上、能力上还有欠缺之外,不了解多选题命题设置的特点,即不知道在什么情况下会出现多选而造成漏解,也是一个重要因素.笔者对近几年各省市中考化学多选题进行了归纳和分类,总结出设置多选题常见的12种可能性.本文拟通过例题述之,帮助学生作出正确判断.
Chemical multiple-choice questions are a type of wisdom and energy that combine intelligence, flexibility, and concealment, and examine students’ ability to analyze problems and solve problems from multiple angles and levels. Therefore, students often answer questions. There are misunderstandings and misunderstandings. The reason is that, besides the students’ lack of knowledge and ability, they do not understand the characteristics of the multiple-choice proposition setting, that is, they do not know under what circumstances there will be multiple choices that cause misunderstandings. , It is also an important factor. The author has summarized and classified the multiple-choice questions for chemistry in the provinces and universities in recent years, and summed up the common 12 possibilities for setting up multiple-choice questions. This article is intended to help students make correct judgments through examples.