试题题干
Fill in each of the following blanks with a word or an expression.
Language is 
because the primary medium for all languages is sound.
参考答案
试题解析
语言是有声的，因为所有语言的主要媒介是声音。
Fill in each of the following blanks with a word or an expression.
Language is because the primary medium for all languages is sound.
语言是有声的，因为所有语言的主要媒介是声音。