单项选择题
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 bespoken only once. When you hear a question, you should decide on the correct answer from the 4choices marked A, B, C and D given in your test paper. Then you should mark the correspondingletter on the Answer Sheet with a single line through the center.
What is the probable relationship between the two speakers（） A．Employer and employee.
B．Teacher and student.
C．Seller and customer.
D．Interviewer and interviewe