以下是一则适合一年级学生的英语段子：

Teacher: Good morning, class! Today we are going to learn about the alphabet. Can anyone tell me what the letter A stands for?

Teacher: That's right! Apple is a fruit. Now, can anyone tell me what the letter B stands for?

Student 2: It stands for book.

Student 3: It stands for cat.

Teacher: That's right! Cat is an animal that likes to sleep a lot. Now, can anyone tell me what the letter D stands for?

Student 4: It stands for dog.