听第3段对话,回答第15至17题。
() 15. How does Mike like Hong Kong?
A. Fun. B. Special. C. Wonderful.
() 16. How many times has Mike been to Hong Kong?
A. Once. B. Twice. C. Three times.
() 17. Why did Mike go to Hong Kong last weekend?
A. To work. B. To go on a vacation. C. To visit his uncle.

由于没有听到第3段对话的内容，无法给出具体的解析和答案。你可以提供对话原文，以便我为你完成解答。

听第4段对话,回答第18至20题。
() 18. Where was Cindy at around 6 p.m. yesterday?
A. At home. B. In the park. C. In the library.
() 19. Who helped Bob at last?
A. Cindy. B. Paul. C. Mr. White.
() 20. What's the relationship between the speakers?
A. Friends. B. Classmates. C. Teacher and student.

因缺少对话内容无法给出准确答案。

四、听短文,根据短文内容完成所缺信息。短文念三遍。

21. 根据短文“It has been open for over 30 years so far.”可知此处填“for over 30 years”。
22. 根据短文“It's the world's first museum for the art of lantern making.”可知此处填“world's”。
23. 根据短文“including ancient oil lamps and modern electric lanterns, as well as special lanterns made from materials such as paper, silk, bamboo, and even glass.”可知此处填“silk”。
24. 根据短文“Lessons for visitors”可知此处填“visitors”。
25. 根据短文“It's a fun event to celebrate lantern art.”可知此处填“celebrate”。
21. for over 30 years
22. world's
23. silk
24. visitors
25. celebrate