Chrome，
QQ浏览器
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![全149集2026寒假新课提前学[六年级数学下册课本精讲]视频+PDF资料人教版六年级数学上下册同步精讲课紧扣课标考点，梳理负数、比例、圆柱圆锥等核心知识模块。](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F5806fa5845746568ce412aac41756f62b9d843d1.jpg%40672w_378h_1c_%21web-search-common-cover)
播放：0 时间：2026-01-17简介： -
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![全149集2026寒假新课提前学[六年级数学下册课本精讲]视频+PDF资料人教版六年级数学上下册同步精讲课紧扣课标考点，梳理负数、比例、圆柱圆锥等核心知识模块。](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F5806fa5845746568ce412aac41756f62b9d843d1.jpg%40672w_378h_1c_%21web-search-common-cover)
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