Question

New technology____________to stop the students from cheating in the exam last year.
A. is used             B.  used              C.  was used

Answer 1

C

be used to sth习惯于某事;used to do sth过去常常做某事. sth be used to do sth某物被用来做某事。句意：去年在考试用新技术被用来防止学生们在考试中作弊。结合语境可知选Ｃ。