题目

如图，点在双曲线上，过点A作AC⊥x轴于点C，线段OA的垂直平分线交OC于点B，则△ABO的面积为（ ） A． B． C． D． 答案：AI ________ two baseballs and my friend ________five baseballs. A. have; have B. have; has C. has; have D. has; has