The neighbor's child had just started elementary school, and for some reason, he had been squinting at things lately.
The neighbor wanted to test his eyesight, wrote a few words of different sizes on the paper, stood a few steps away, and let the child see.
As a result, no matter which word the neighbor pointed to, the child shook his head vigorously. The neighbor asked a little nervously, "Child, I didn't expect your eyesight to be so poor."
The child shook his head vigorously and said, "It's not that I don't have good eyesight, it's that I don't know those words at all." ”

Xiaoming received his summer vacation homework and complained to the teacher: "This is also too thick!" ”
Teacher: "Yeah, so how about I make it a quarter thinner?" ”
Bob: "Okay. So the teacher turned to the end of the book and sharply tore off the reference answers.