The structural stability of idioms is reflected in the following

The structural stability of idioms is reflected in the following aspects EXCEPT（ ）.
A、the constituents of idioms cannot be replaced​
B、the word order cannot be inverted or changed
C、the various words that make up the idioms have lost their individual identity
D、the constituents of an idiom cannot be deleted or added to, not even an article
【正确答案】：C
【题目解析】：本题考查习语的整体性和稳定性。习语的成分是不可替代的；词序不能颠倒或改变；构成习语的各种词语失去了各自的个性；习语的组成部分不能删除或添加，即使是冠词也不行。C项属于习语语义整体性，而ABD三项属于习语结构稳定性的内容。故C选项符合题意。