题干
-- May I take this book out?
-- No, you ______.
A：can't
B：may not
C：needn't
D：aren't
答案(点此获取答案解析）
A
-- May I take this book out?
-- No, you ______.
A：can't
B：may not
C：needn't
D：aren't
的中心为顶点，右焦点为焦点的抛物线方程是（ ）
