Chrome，
QQ浏览器
.
![【获奖】苏教版初中九年级数学上册1.4 用一元二次方程解决问题-徐老师]【市一等奖】优质课优质课公开课教学视频](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F7f0cba29816896e3de68f102aa36cc94f601a59f.jpg%40672w_378h_1c_%21web-search-common-cover)
![【获奖】苏教版初中九年级数学上册1.3 一元二次方程的根与系数的关系-周老师]【市一等奖】优质课优质课公开课教学视频](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F073935556144be60823d224235ef9a404eee1eee.jpg%40672w_378h_1c_%21web-search-common-cover)
.