[单选题]Linguistic dictionaries usually do not cover such areas as（）.

Linguistic dictionaries aim at defining words and explaining their usage in the language. Linguistic dictionaries usually cover such areas as spelling, pronunciation, meaning, grammatical function, usage and etymology. 语言词典着眼于词的定义及解释其在语言中的用法。 它们通常包括拼写、发音，意义、语法功能、用法及词源等这些方面。所以并没有声音部分。