Just now I was trying to copy some text from a PDF file which I was viewing using Adobe Acrobat Reader XI.
It was weird that I couldn't switch from the hand tool mode to the text selection mode. I checked all the menu options and it wouldn't let me do that.
Finally I got the "hidden" option. :)
Right Click on the text and the context menu gives you option to switch between Text "Select Tool" and "Hand Tool". It was that simple and I had to look around.