常见问法：Why does the professor mention/tell/talk about…?
技巧一：主题原则，常见于直线型结构
技巧二：就近原则，常见于并列或对比型结构
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常见问法：Why does the professor mention/tell/talk about…?
技巧一：主题原则，常见于直线型结构
技巧二：就近原则，常见于并列或对比型结构