can't he swim or skate?是不是选择疑问句？

改错－－－Can't he swim or skate?

－－－Yes, he can't.
参考答案是将yes改为no．
有个学生说这是一个选择疑问句，要具体回答．真搞糊涂了，帮帮忙，谢谢了

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