听下面一段材料,回答第1至4题。 1. How old is the speaker? [ ] A. 15. B. 17. C. 22. 2. Why has the speaker long been looked down upon? [ ] A. He's hearing-disabled. B. He can't get on well with his classmates. C. Something is wrong with his brain. 3. What does the speaker want to prove? [ ] A. He's a non-disabled person. B. He's better at studies and sports than anyone else. C. He's no different from the average teenager. 4. What makes him a strong person? [ ] A. His physical limitation and his courage. B. His hard training in studies and sports. C. His family and school background.