元素及化合物推断题主要是为了考查学生综合分析能力和逻辑推理能力 ,解答此类题目的关键是抓住元素、化合物的特性 ,挖掘解题题眼 ,并以此为突破口 ,便可顺利解答。下面就此观点进行实例阐述。例 1 (天津市 2 0 0 0年中考题 )如图 1所示 ,Ａ为红色 ,Ｇ ,Ｈ为黑色固体Ｂ ,Ｄ Element and compound inference questions are mainly for the purpose of examining students’ comprehensive analysis ability and logical reasoning ability. The key to answering such questions is to grasp the characteristics of elements and compounds, and to dig out the problem-solving questions, and use this as a breakthrough point to answer smoothly. The following example illustrates this point of view. Example 1 (Tianjin mid-2000 exam) As shown in Figure 1, A is red, G, H is black solid B, D