物质推断题具有知识面广、隐蔽条件多、关系较复杂、综合性强的特点,经常会出现有一定难度的题型。它不仅考查同学们对化学原理、物质的性质、各物质间的关系及实验现象的掌握情况,而且考查同学们分析问题和解决问题的能力,因此常被用于中考试卷中。要快速、准确地推断出题设结 The question of material deduction has the characteristics of wide knowledge, many hidden conditions, more complex relations, and strong comprehensive features. There are often difficult questions. It not only examines the students’ understanding of the principles of chemistry, the nature of matter, the relationships between various substances, and experimental phenomena, but also examines the ability of students to analyze problems and solve problems, so it is often used in the examination papers. To quickly and accurately infer the problem