题目

如图，点A为函数y=（x＞0）图象上一点，连结OA，交函数y=（x＞0）的图象于点B，点C是x轴上一点，且AO=AC，则△ABC的面积为__． 答案：【答案】6【解析】 ,垂足分别为D、E,设A(a, )，OC=2a，因为 得：a=3b, 则△ABC的面积为 .故答案：6.— What are you doing, Mary? — I'm looking _____ my mobile phone. I want to call my father. [     ]A. after B. like C. for