(For) the purposes of the fine and decorative arts, (metals have) been (used) ei

游客2024-01-05 29

问题 (For) the purposes of the fine and decorative arts, (metals have) been (used) either in their simple state (and) in uncomplicated alloys.

选项 A、For
B、metals have
C、used
D、and

答案 D

解析

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