六年级英语阅读题 How many letters?

How many letters?
Father:  How many letters are there in the English Alphabet?
Son:    I don’t know.
Father:  You don’t know? You are in the school  for one year and you don’t know how many letters there are in the Alphabet?
Son:    No. But let me ask you a question, Dad. You often go to the post office, please tell me how many letters there are in the post office?

 快速判断：
1. There are twenty-six letters in the English Alphabet.    (    )
2. The son doesn’t study English well.                            (    )
3. The son can’t answer his father’s question.            (    )
4. The father works in the post office.                            (    )
5. There are twenty-six letters in the post office.         (    )