听录音，然后回答问题。
Listen to the tape then answer this question.
Why didn't Caroline recognize the customer straight away?
为什么卡罗琳没有马上认出那位顾客？

Customer:       I bought two expensive dictionaries here half an hour ago, but I forgot to take them with me.
Manager:   Who served you, sir?
Customer:   The lady who is standing  behind the counter.
Manager:   Which books did you buy?
Customer:   The books which are on the counter.
Manager:   Did you serve this gentleman half an hour ago, Miss Roberts?
He says he’s the man who bought these books.
Miss Roberts:  I can’t remember, sir. The man whom I served was wearing a hat.
Manager:   Have you got a hat, sir?
Customer:   Yes, I have.
Manager:   Would you put it on, please?
Customer:   All right.
Manager:        Is this the man that you served, Miss Roberts?
Miss Roberts:   Yes, sir. I recognize him now.
----------------
expensive
dictionaries

customer n. 顾客
forget (forgot, forgotten) v. 忘记
take...with...
served
manager n. 经理
serve v. 照应，服务，接待
counter n. 柜台
put on
recognize v. 认出
---------------
参考译文
顾 客：半小时以前我在这里买了两本很
贵的辞典，但是我忘了拿走。
经 理：是谁接待您的，先生？
顾 客：站在柜台后面的那位女士。
经 理：您买的是两本什么书？
顾 客：就是柜台上的那两本。
经 理：卡罗琳，半小时前你接待过这位先生
吗？他说他就是买这两本书的人。
卡罗琳：我记不起来了。我接待的那个人戴着一顶帽子。
经 理：先生，您有帽子吗？
顾 客：有的，我有帽子。
经 理：请您把帽子戴上好吗？
顾 客：好吧。
经 理：卡罗琳，这就是你接待过的那个人吗？
卡罗琳：是他。我现在认出他来了。