Chrome，
QQ浏览器
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![人教数学七上4.2 直线、射线、线段的概念[程老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F9e32065a23b7126358a27ba66fe8c6d8aa406602.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：0 时间：2025-01-13简介： -
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![人教数学七上4.2 《直线、射线、线段的概念》[程老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2Ff3fadcf6090554df691dc19f578f9d577841c5fd.jpg%40672w_378h_1c_%21web-search-common-cover)
![人教数学七上4.2 直线、射线、线段的概念[程老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F9e32065a23b7126358a27ba66fe8c6d8aa406602.jpg%40672w_378h_1c_%21web-search-common-cover)
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