Being phrases or sentences, each idiom consists of more than one word, but each is a semantic ( ). For example, till the cows come home means “forever”and functions as an adverb.
【正确答案】：UNITY
【题目解析】：本题考查语义的整体性。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。例如：till the cows come home表示永远地、永久地，在句子中用作副词。semantic unity：语义的整体性
