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纵观2007年全国和各省市的高考卷,我们发现,对平面向量问题的考查在不断深化:由过去的主要考查平面向量内部的纵向知识向
Looking at the national and provincial college entrance examination papers in 2007, we find that the examination of the plane vector problem is continuously deepening: from the longitudinal knowledge within the previous main examination plane vector