Chrome，
QQ浏览器
.
![苏教版八年级数学下册11.1 反比例函数[周老师]【市一等奖】_优质课公开课教学视频](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F1ee697ed0cea36254e50d4dbc645b6821de62422.jpg%40672w_378h_1c_%21web-search-common-cover)
.