Behavior ______is a natural scientific approach to the study of all behavior ,and behavior analysts are concerned with how our surroundings and personal histories determine who we are . ( 章节：8 难度：4)_做题室

单项选择题Behavior ______is a natural scientific approach to the study of all behavior ,and behavior analysts are concerned with how our surroundings and personal histories determine who we are . ( 章节：8 难度：4): A、brillian; B、complications; C、tremendous; D、analysis.

正确答案：D
答案解析：
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