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【简答题】
已知椭圆C的中点在原点，焦点在x轴上，离心率等于 ，它的一个顶点恰好是抛物线 的焦点． (1)求椭圆C的方程； (2)己知点P(2，3)，Q(2，-3)在椭圆上，点A、B是椭圆上不同的两个动点，且满足 APQ= BPQ，试问直线AB的斜率是否为，请说明理由．
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举一反三
【单选题】II. Multiple choices 单选 1’ * 15 = 15’ He ______ some French while he was away on a business trip in Paris.
A.
made out
B.
picked up
C.
gave up
D.
took in
【单选题】UNIT 15 1
A.
Yes. They're fun and convenient.
B.
No. You can go where you want.
C.
I don't know. I haven't been aboard.
【单选题】Unit 1-15 While there is no carved-in-stone edict about what it means to be middle class, it's the term that Americans hang their dreams on.
A.
creed
B.
decree
C.
verdict
D.
statute
【简答题】阅读理解。 For a while, my neighborhood was taken ever by an army of joggers (慢跑者). They were there all the time: early morning, noon, and evening. There were little old ladies in gray sweats, young couple...
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