一、试题再现与分析题目呈现:如图1,在△ABC中,D是BC的中点,E,F是AD上的两个三等分点,BA·CA=4,BF·CF=-1,则BE·CE的值是____.这是2016年普通高等学校招生全国统一考试(江苏卷)第13题,处于填空题中的倒数第二位置,相当于把关题.本题主要考查平面向量数量积的运算知识,考查学生 First, the test questions reproduced and analyzed The question shows: As shown in Figure 1, △ ABC, D is the midpoint of BC, E, F is AD on the two thirds, BA · CA = 4, BF · CF = 1, then the value of BE · CE is ____. This is the 13th issue of the National Unified Examination for Enrollment in Colleges and Universities in 2016 (Jiangsu Volume), which is the penultimate position in the field of blank filling, which is equivalent to the problem. Vector quantity product of the operation knowledge, examine students