New technology to stop the students from cheating in the exam last year.A. used B. is us

问题补充：

New technology to stop the students from cheating in the exam last year.

A. used B. is used C. was used

答案：

解析：

试题分析: 句意：去年新的技术被应用于防止学生考试作弊。last year去年，一般过去时，技术被应用，被动语态，故选C.