题目

—How well Anna sings! I can’t believe my ears!        —______．A．So she doesB．So does sheC．Neither can sheD．So can I 答案：A解析: 略4．抛物线的焦点在x轴上，抛物线上的点P（-3，m）到焦点的距离为5，则抛物线的标准方程为y2=-8x．