第一部分听力（共25小题；每小题1分，满分25分）
(一)听句子，选择恰当的答语。每个句子读两遍。
1. A. You’re welcome. B. I think so. C. How do you do?
2. A. I’m glad to see you. B. Speaking, please. C. Certainly. Here you are.
3. A. Hold on, please. B. Good morning. C. No, thank you. I’m full.
4. A. It doesn't matter. B. See you later. C. It’s kind of you.
5. A. The same to you. B. It’s April 25. C. That’s a good idea.
