选择题：- Mike, I am going to skate in the mountains tomor

题目内容：

- Mike, I am going to skate in the mountains tomorrow.
- Oh, really? _________
A.I am sorry. B.Thank you. C.Have a good time. D.Congratulations!

参考答案：

为了获得知识产权的海关保护，专利权人必须向海关总署提交书面申请。知识产权海关总署保护备案，自海关总署

为了获得知识产权的海关保护，专利权人必须向海关总署提交书面申请。知识产权海关总署保护备案，自海关总署准予被安置日起生效，有效期为（ A ）。

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