Chrome，
QQ浏览器
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
播放：7 时间：2024-06-20简介： -
-
-
-
-
-
-
播放：19 时间：2024-06-19简介： -
-
-
-
-
-
-
-
![北师大数学八上《2.6 实数》[石老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fa5727e74d7b05c033c1335d54b7901943d6628dc.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
-
![北师大数学八上《2.6 实数》[石老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fa5727e74d7b05c033c1335d54b7901943d6628dc.jpg%40672w_378h_1c_%21web-search-common-cover)
.