问题
选择题
The camera _______ in 1827 by Joseph Nicephore Niepce.[ ]
A. invented
B. is invented
C. was invented
D. is inventing
答案
答案：C
搜题请搜索小程序“爱下问搜题”
The camera _______ in 1827 by Joseph Nicephore Niepce.[ ]
A. invented
B. is invented
C. was invented
D. is inventing
答案：C