1. (2021·包头) 听下面一段材料，回答下面三个小题。

1. （1） What is the relationship between the two speakers?

   A . Teacher and student. B . Doctor and patient. C . Father and daughter.
3. （2） How many girls are there in Mary's class?

   A . 23. B . 30. C . 32.
5. （3） Which subject does Mr. Wu teach?

   A . Math. B . Chinese. C . English.