试题题干
Fill in each of the following blanks with a word or an expression.
The development of a first or native language is called first language 
.
参考答案
试题解析
第一语言或母语的发展被称为第一语言习得。
Fill in each of the following blanks with a word or an expression.
The development of a first or native language is called first language .
第一语言或母语的发展被称为第一语言习得。