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题目内容
（信阳师范学院-英语词汇学）
An idiom consists of at least two words. Each has a single meaning and often functions as one word. This is called _（ ）
A. semantic unity
B. structural stability
C. structural stability
D. none of the above
A. semantic unity
B. structural stability
C. structural stability
D. none of the above
参考答案
