"Turn on" and "turn off" are antonymous idio

"Turn on" and "turn off" are antonymous idioms, resulting from ______.
A、replacement
B、addition
C、shortening
D、position-shifting
【正确答案】:A
【题目解析】:本题考查第九章习语的变异形式,有Replacement替代,Addition or deletion添加或删除,Position-shifting位移,Shortening缩短,Dismembering拆散五种,考生需要对五种形式进行辨析。Turn on与turn off改变部分单词,使两者意思相反,符合Replacement替代的含义,因此选A