【正确答案】Sound and meaning are related arbitrarily, which means there is no logical connection between meanings and sounds. A dog might be a pig if only the first person or group of persons has used it for a pig. Language is therefore arbitrary. On the other hand, for the same object, different sounds can be used to express the same meaning For instances, “book /buk/”in English is “书” in Chinese， but“本” in Japanese. It can be concluded that, in most cases, meanings and their corresponding sounds are arbitrary. Duality is a distinctive feature of language that refers to the fact that languages are organized in terms of two levels. At one level, language consists of sequences of segments or units which do not themselves carry meaning (such as the letters"g", "d"). However, when these units are combined in certain sequences, they form larger units and carry meaning (such as dog).

【答案解析】无