请听下面一段材料,回答第1-3题。 1. Why did Jack fall asleep in class? [ ] A. He didn't sleep well last night. B. The class was boring. C. He was too lazy. 2. What is wrong with Jack? [ ] A. He has a high fever. B. He has a bad cough. C. He has a headache. 3. What can we know about Jack from the conversation? [ ] A. He didn't see a doctor. B. He is still ill. C. He is much better now.