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请听下面一段材料,回答1-3题. 1. How long did each lesson last? A. 24 hours B. 12 hours C. 6 hours 2. When did the student learn English grammar and new words for the first time? A. From 8 pm to 11 pm. B. From 11 pm to 2 am. C. From 2 am to 5 am. 3. What did the student have to do before breakfast? A. Listen to light music. B. Reviewed the lesson for a few minutes. C. Went through the lesson again for three hours.