题目内容

         _______ in the 1800s and first mass-produced in Germany, the harmonica(口琴) was designed to play simple folk tunes.
A．Being inventedB．InventingC．InventedD．Having invented
C
考查非谓语动词。逻辑主语the harmonica与invent之间为被动关系，故用过去分，选C。
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