单项选择题

Section A Directions: This section is to test your ability’ to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A) , B) , C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the centre.

A.Salesman and customer.
B.Boss and employee.
C.Doctor and patient,
D.Teacher end student.