题目

What surprised me was not what he said but _________ he said it. A. the way         B. in the way that     C. in the way       D. the way which   答案：A如图，O，A，B是平面上的三点，向量=，=设P为线段AB的垂直平分线CP上任意一点，向量=，若||=4，||=2，则•（-）=（ ）A．1B．3C．5D．6