求翻译：因为设问的主要目的是启发学生的思考，所以，教师提的问题应明确易懂，不能太大，让小时摸布道边际，如果需要，可以将这样的大问题改换成一个具体的问题或者若干个小问题。所提的问题应该表述的很清楚，避免所提的问题远离学生的生活经验而给解决问题造成不必要的干扰。所提的绝大多数问题应该面向全体学生，发问后教师要适当停留一些时间给学生思考，对学生的回答要认真倾听，予以中肯和明确的评价。如果学生不能回答，教师必须尽快辩明原因，是问题的难度不适应？师生之间的感情渠道不畅通？还是班级的学习风气问题？找出相应的对策。是什么意思？

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