Part two, the content and criterion of effective teaching validity.

第二部分，有效教学正当性的内涵与判断标准。

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Part four, the proposals of insisting on the validity of effective teaching.

第四部分，坚持有效教学正当性的建议。

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Part four, the proposals of insisting on the validity of effective teaching.

第四部分，坚持有效教学正当性的建议。

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