That was a difficult question, but Mary still ____

That was a difficult question, but Mary still _______ to work it out.A.didB.

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(多选题) 保险单按保险期间可分类为( )(本题4.0分)A. 定值保险单B. 混合保险单C. 航程

(多选题) 保险单按保险期间可分类为( )(本题4.0分)A. 定值保险单B. 混合保险单C. 航程保险单D. 定期保险单

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发明、实用新型和外观设计专利申请文件中都包括( D )。

发明、实用新型和外观设计专利申请文件中都包括( D )。

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______ did he know what had happened during the tw

______ did he know what had happened during the two months when he was away.A.A

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一种新型食品的制作方法可以提出( B )

一种新型食品的制作方法可以提出( B )

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