On the first day of freshmen's registration, when they called the roll, they suddenly found an unknown word in a student's name. What should you do?

What should I do? If you don't understand, you won't understand I admire that he can read all Chinese characters. If you don't know, you should humbly say, "Well, I'm sorry, I can't understand this word. Please tell me. " In addition, you should have prepared it the day before, read the names of these students and look up uncommon words. Why not prepare? It is normal that you can't read. You don't need to blush.