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第1题

- May I see your tickets, please? - ________ A.Sure. B.No, you can.t. C.No, they are mine. D.Yes, you can.
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第2题

- ________ - He teaches physics in a school. A.What does your father do? B.Who is your father? C.What is your fat
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第3题

- Can I speak to Mr. Rose? - _________ Can I take a message for him? A.This is he. B.I am afraid he is not in. C.W
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第4题

已知曲线 过原点，且在原点处的切线平行于直线 ，又 满足微分方程 ，求此曲线的方程 ．
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