题目

要得到二次函数的图象，则需将的图象（       ）   A．向右平移两个单位            B．向下平移1个单位   C．关于轴做轴对称变换        D．关于轴做轴对称变换 答案：CThe boy joyfully ate up every single bit of the food on the table, his dog     at him with its mouth watering. A. staring  　  B.stared   　　Ｃ.to stare    D. having stared