Doesn't this specifically mean "Do you like reading books?"? Because you could say it's substitute 书 with the word for comic or magazine and the meaning changes. So how would you say just "Do you like reading?"
I selected the buttons for 你, 喜欢, 看, 书, 吗 but pressed separate icon buttons for 看 and 书 instead of the button for 看书. Character-wise, I don't see a difference...I would think my answer should have been accepted, since the solution is 你喜欢看书吗？