So far as spelling and pronunciation are concerned, words are ar

So far as spelling and pronunciation are concerned, words are arbitrary symbols and ( ) identities.
【正确答案】：INDEPENDENT
【题目解析】：本题考查单词的定义。Words are arbitrary symbols with independent identities so far as their spelling and pronunciation is concerned.就其拼写和发音而言，单词是具有独立身份的任意符号。