Answer:
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I’ve told you all I cannot tell you more.
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
I have a small hill with seven holes. What am I?
What invention lets you look right through a wall?
I go up when the rain comes down
What never gets any wetter no matter how hard it rains?