【題目】 Potato chips by mistake in 1853.

A. invent B. invented

C. were invented D. are invented

【答案】C

【解析】

試題分析：句意：薯片是在在1853年意外發(fā)明的。Potato chips是invent這一動作的承受者，該用被動語態(tài)。而被動語態(tài)是由“be + 及物動詞的過去分詞”構(gòu)成的。根據(jù)in 1853可知該用一般過去時，所以選C。

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