The visual editor is broken in Wordpress. THe editor is only HTML mode. The tabs to switch between VISUAL / HTML modes are hidden. I already tried deactivate all plugins but not working. WP 3.5.1. 
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
回答1:
hi this exact problem happen with you can fix by going to
users >> Profile >> Visual Editor uncheck check box
Thankyou
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