Chrome，
QQ浏览器
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
播放：11 时间：2024-06-19简介： -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
![人教数学七下6.1.3平方根[刘老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F534430f13b699c523815a16260a5f92283bb38fe.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
![人教数学七下6.1.3平方根[刘老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F534430f13b699c523815a16260a5f92283bb38fe.jpg%40672w_378h_1c_%21web-search-common-cover)
.