试题题干
Words are arbitrary symbols and are（） identities so far as their outer facet — spelling and pronunciation, is concerned.
参考答案
正确答案：
试题解析
词就其外部方面拼写和发音而言是具有任意性的符号和独立的单位。
Words are arbitrary symbols and are（） identities so far as their outer facet — spelling and pronunciation, is concerned.
词就其外部方面拼写和发音而言是具有任意性的符号和独立的单位。