【答案解析】[听力原文]6-7
W: What can I do for you, sir?
M: I'm looking for a jacket for my son.
W: Come with me, please, Here are jackets for boys.
M: The black one looks nice. How much is it?
W: Twenty-five pounds.
M: Oh, I'm afraid it's too expensive.
W: What about the blue one over there? It looks nice too, and it's cheap.
M: But it's a bit too small. Do yea have a bigger size?
W: Surry, we don't. But we'll get some soon. Will you come next week?
M: OK, I'll come again,
单选题
For what reason doesn't the man buy the black jacket?