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Potatochips       bymistakein1853.A.invent B.invented C...

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问题详情:

Potatochips       bymistakein1853.A.invent B.invented C...

Potato chips        by mistake in 1853.

A. invent  B. invented  C. were invented  D. are invented

【回答】

C

知识点:动词语态

题型:选择题