单选题 When children learn to distinguish between the sounds of their language and the sounds that are not part of the language, they can acquire any sounds in their native language once their parents teach them.
【正确答案】 B
【答案解析】解析：不论孩子们生活在何种语言环境中，他们首先获得的是世上所有语言的普遍性知识，之后他们才会学习更为复杂的语言。