听下面的独白及问题,根据其内容选择正确答案。 ( )1. A. She's 14. ( )2. A. Her hobby. ( )3. A. Nina's teacher. ( )4. A. Last month. ( )5. A. 1 hour. ( )6. A. By working hard. B. She's 15. B. Her family. B. Nina's mother. B. Last week. B. 2 hours. B. By reading more. C. She's 16. C. Her school. C. Nina's sister. C. Last year. C. 3 hours. C. By watching TV.