题目

 “Do you think           I should attend the lecture?” she asked me. A. that    B. whether      C. if D. when 答案:A 顶点在原点,焦点在y轴上,且过点P(-6,-3)的抛物线的方程是 [  ] A. x2=12y B. x2=-12y C. y2=12x D. y2=-12x
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