For a long time, I am struggling to find a way to switch between Hand Tool and Select Tool, today I happened to find a method about it:
This is called Adobe Reader Keyboard Shortcuts, to enable single-key shortcuts, in Adobe Reader or Adobe Acrobat, choose choose Edit > Preferences > General, and then select the Use Single-Key Accelerators To Access Tools option.
Now worlds are peace. To go to Hand Tool, press "H"; Select Tool, press "V".
For more information, please go to http://help.adobe.com/en_US/Acrobat/9.0/Standard/WS58a04a822e3e50102bd615109794195ff-7aed.w.html
