阅读理解。Can you tell me A father asks his son, ’How many letters are there in the alphabet ’ ’I d阅读理解。 Can you tell me A father asks his son, ’How many letters are there in the alphabet ’ ’I don’t know,’ says his son. His father says, ’You don’t know You are in school for many years and you don’t know how many letters there are in the alphabet ’ He is very angry. His son says, ’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 ’ 根据短文内容判断句子正（）5. There are twenty-six letters in the alphabet.