w3school打开速度慢的解决办法

修改hosts

203.208.40.94   www.googletagmanager.com
203.208.50.89   pagead2.googlesyndication.com
203.208.43.77   googleads.g.doubleclick.net
203.208.43.72   fonts.googleapis.com
203.208.39.205    cm.g.doubleclick.net