单项选择题:
______ of second language acquisition was developed from the Halliday's theory of first language acquisition.
A. Habit formation theory
B. Discourse theory
C. Monitor theory
D. Cognitive theory
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答案：B
解析:话语交际说是由韩礼德的第一语言习得理论发展而来的，由哈奇于20世纪70年代后期提出。