第一节 (共5小题，每小题1分，满分5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有15秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
1. Who is the woman?
A. Mary. B. Mary’s sister. C. Mary’s mother.
2. When did the man live in London?
A. Last year. B. Last month. C. When he was a child.
3. What happened to the man just now?
A. He met an old friend on the street.
B. He mistook the woman for his friend.
C. Lydia paid an unexpected visit to him.
