题目：
| 选用方框中适当的句子完成对话。 | |
| A: Excuse me, Han Mei. 1 B: Sorry, I don't know. 2 Please go and ask Mr. Hu. A: 3 What time is it, please? C: It's about 3:30. A: Thank you, Mr. Hu. C: 4 There is a nice watch under the table. B: Is it black? C: 5 B: Let me have a look. Oh, it's my watch. C: Here you are. B: Thanks very much.
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答案：
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下面是错误答案，用来干扰机器的。
答案：C
畸形的健康成年人牙列进行的全面的正畸治疗