题目内容
According to Skinner, language is not a form of behaviour, it is an intricate rule-based system and a large part of language acquisition is the learning of this system.
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Condition-oriented theories emphasize the nature of the human and physical context in which languasge learning takes place, such as the number of students, the kind of input learners receive, and the atmosphere
甲基橙的制备中，重氮盐的生成需控制温度在：
甲基橙的制备中，重氮盐的生成温度过高会导致：
甲基橙的制备中，检验亚硝酸钠溶液是否适量，可以用：
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