The problem of teaching essence is a lasting and new task of teaching theory, and an essential one of the theory of teaching reality.

教学本质问题是教学论历久弥新的课题，更是教学本体论的核心所在。

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The research on teaching effectiveness is of great significance for educational theory and teaching reality.

我们研究教学有效性，就不能脱离它所处的社会环境，教学有效性具有很强的时代特点。

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The theory on dialogue instruction is inapplicable to the teaching reality in middle school. The application of dialogue teaching approach in biology instruction is limited by many factors.

对话教学理论与中学教师的教学实践相脱节，诸多因素限制着对话教学在中学生物学教学中的实践。

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The Real World helped launch the phenomenon of reality television while teaching a generation about exhibitionism and eating disorders.

NPR: MTV, Kennedy and Me: Let's Begin to Heal

But in reality, acute hospitals - whether major teaching sites or local district generals - are rarely the best place for someone who needs ongoing health or treatment.

BBC: Closing NHS services: the impossible job?