It is said that potato chips ______ by mistake about a hundred years ago. [ ]A. invent B. invented C

题目简介

It is said that potato chips ______ by mistake about a hundred years ago. [ ]A. invent B. invented C

题目详情

It is said that potato chips ______ by mistake about a hundred years ago.

[     ]

A. invent
B. invented
C. are invented
D. were invented
题型:单选题难度:中档来源:北京中考真题

答案

D

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