second language acquisition (SLA)

second language acquisition (SLA)
【正确答案】:The development of a second or third foreign language (L2) is called second language acquisition.
【题目解析】:二语习得是相对于一语习得而言的,是指第二语言的习得或发展过程。二语习得主要研究学习者在习得第一语言后,如何习得第二门语言。
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