This year the factory ________ almost twice as many motors as it

This year the factory ________ almost twice as many motors as it did last year.
A、turned down
B、turned off
C、turned out
D、turned over
【正确答案】：C
【题目解析】：turn down拒绝，减小；turn off关闭，关掉；turn out结果是，出席，生产，制造；turn over移交，翻阅句意：这家工厂今年生产的发动机几乎是去年的两倍。