Chrome，
QQ浏览器
-
-
-
-
-
-
-
-
-
-
-
![人教数学七上2.2整式的加减运算[梅老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2Fdf2c02126b36ea185d02eacb762aaed9bea09bec.jpg%40672w_378h_1c_%21web-search-common-cover)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
播放：10 时间：2024-08-03简介： -
-
-
![人教数学七上2.2整式的加减运算[梅老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2Fdf2c02126b36ea185d02eacb762aaed9bea09bec.jpg%40672w_378h_1c_%21web-search-common-cover)
.