Son: Dad, what are you doing?
Dad: I am watching TV, a very instructive（有益的） program.
Son: What’s it about?
Dad: About the mysterious（神秘的）animals, the most smartest（最聪明的）.
Son: I know it. The gorilla（猩猩） is the most cleverest animal in the world except human.
Dad: Yes. They have so many similarities with the human. Do you know something about their smartness.
Son: I’m so sorry. Does the TV program tell some about it?
Dad: The program is showing how they can put the stick into the ant-holes to help them eat. It’s so incredible（难以置信的）.
Son: Really?
Dad: Of course! Come here and let’s watch it together.