Being phrases or sentences, idioms each consist of more than one

Being phrases or sentences, idioms each consist of more than one word, but each is a semantic ( ).
【正确答案】：UNITY
【题目解析】：本题考查词义的整体性。Being phrases or sentences, idioms each consist of more than one word, but each is a semantic unity.因为习语是由固定的短语和短句组成，所以每条习语由一个以上的词组成，但其语义又是一个整体。故答案为unity。