Chrome，
QQ浏览器
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播放：1 时间：2025-10-16简介： -
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![人教数学七上1.2.1有理数[周老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F2bc2b03d6db123066757689875433cc110ead7a1.jpg%40672w_378h_1c_%21web-search-common-cover)
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![人教数学七上1.2.1有理数[周老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F2bc2b03d6db123066757689875433cc110ead7a1.jpg%40672w_378h_1c_%21web-search-common-cover)
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