1. Read the book first;

2. Apple is almost invisible, because he is fascinated by it, because he is nearsighted and must like reading.

3. If an adult reminds him to look at the apple, he will look up and see it.

4. If an adult is not busy and has the time to observe what he reads first, it is best to peel the apple, cut it into small pieces, put it on a plate, put a small fork in it, and then put the plate in front of his book. Finally, don't talk and go away!