Frog: What is a human teacher?

After dinner, it was already dark, but there were waves of cheerful songs in the stream next to the park. Who is singing? It turns out that there are many singing frogs living in the stream. They always sing one cheerful ballad after another at night. Singers are wearing green coats with big eyes. There is a white shirt under the green coat!

In order to better describe the singer, I put the drawing board directly beside me to draw, ready to draw well. Frogs used to walk around me obediently, but now they simply step on my drawing board, as if my drawing board didn't exist, and the original clean little drawing board suddenly turned into a big cat. I am angry, but I can't kill the little frog. Who can help the little frog to the farmer's uncle?

I went home depressed and found my grandmother who always loved me to complain. Grandma smiled and said, "silly child, don't be angry." Frogs are keen on moving things, but turn a blind eye to static things, so you can't blame the little frog. " "Oh." It suddenly dawned on me that grandma really deserves to have seen the world.

Although I know the frog's little secret, curiosity drives me to experiment. I took a twig and put it in front of the stream. A frog general led a small frog army on patrol. At this time, the twig is in front of them, but they turn a blind eye and jump, jump, jump. Some little frogs also fell.

After going home, I looked it up on the encyclopedia (computer) and finally found it after a long time. What a "God helps those who help themselves"! Why frogs turn a blind eye to static things is similar to what grandma said. According to the visual principle of frog eyes, people have successfully developed electronic frog eyes. This kind of electronic frog's eyes can accurately identify objects with specific shapes like real frog's eyes. Electronic frog eyes are widely used, and almost all airports and traffic arteries have their "figures".

There is an old saying, "The world is full of miracles"! Through this discovery, I understand that only by careful thinking can we find more strange questions and explore answers in this magical and wonderful nature.