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学者们认为()强化可使学生获得更多的快乐、更强的自尊和自信,从而促进成功的学习。

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保护接零能够降低漏电设备对地电压。

我国电视综艺节目的开端可以追溯到1983年()。

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“As managers use computer and software tools more often, they well be able to make more rational decisions. "Do you agree or disagree with that statement? Why?

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