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播放：7 时间：2024-06-19简介： -
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![北师大数学八上《4.2 一次函数与正比例函数》[唐老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F8b0ea7c9f72e51175fcaaca0c3edfaa12852d188.jpg%40672w_378h_1c_%21web-search-common-cover)
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![北师大数学八上《4.3一次函数的图象与性质》[孙老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F5dc90841db066475842eb71ce566c24295685e05.jpg%40672w_378h_1c_%21web-search-common-cover)
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![北师大数学八上《4.2 一次函数与正比例函数》[唐老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F8b0ea7c9f72e51175fcaaca0c3edfaa12852d188.jpg%40672w_378h_1c_%21web-search-common-cover)
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