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听下面一段材料,回答第1-3题。 1. On which day of the first month of the lunar calendar does the festival end officially? A. The fifth. B. The seventh. C. The fifteenth. 2. Why did people use to set off firecrackers? A. To welcome the coming of spring. B. To create a festive atmosphere. C. To drive away the bad spirits. 3. What are some of the customs that the man mentions? A. People give their houses a thorough cleaning before the festival. B. People turn on all the lights in their houses on New Year* s Eve'. C. People everywhere in China have 'Jiao zi' for New Year' s dinner.