听力原文：M: Where can I get the perfume wrapped? I bought it as a present.
W: Our gift-wrapping department is on the second floor.
Q: What's the most probable relationship between them?
(18)
A.Son and mother.
B.Customer and shop assistant.
C.Clerk and boss
D.Student and teacher.

A.W:
B.
Q:
C.Son
D.
B.Customer
E.
C.Clerk
F.Student

【参考答案】

B
解析：信息词bought和department可说明他们的关系是顾客和售货员。