单选题 Woman: I hear you've got the highest marks in our class. Congratulations!
Man: Thank you. I'm sure you've also done a good job.
Question: Who are the speakers?

A、 Two teachers.
B、 A student and a teacher.
C、 Two students.
D、 Mother and son.

【正确答案】 C

【答案解析】[解析] 此题考查会话双方的关系。从用词highest marks，class可以推断出是谈论学校的考试分数。I am sure you've also done a good job说明两人是同样的身份，即都是学生。