“注重学科的内在联系,整合知识网络交汇点”是高考命题“能力立意”的宗旨,而数列与不等式均是交融性极强的素材,又是与高等数学衔接比较紧密的知识．由于它们这种特殊的地位,以这二者交汇处为主干,构筑成知识网络型的代数推理题,在近几年(尤其是2005年和2006年)高考中出现的频率相当高,占据着令人瞩目的地位,成为有效甄 “Paying attention to the internal relations of the discipline and integrating the intersection of knowledge networks” is the tenet of the college entrance examination proposition “Competence and Consciousness”. The series and inequalities are materials with strong blending, and they are also more closely linked with higher mathematics. Because of their special status, the intersection of these two branches is the backbone of the construction of knowledge-based algebraic reasoning problems. The frequency of appearances in the college entrance examinations in recent years (especially in 2005 and 2006) is quite high. Embarrassing destination, becoming effective