1. (2019·临沂模拟) 听下面一段较长对话，回答以下小题。

1. （1） Why is Billy at the doctor's?

   A . He has a bloody nose. B . He has a bad cough. C . He has a problem with his lungs.
3. （2） What does Dr. Johnson suggest?

   A . Exercising more. B . Getting some vitamin tablets. C . Drinking a lot of cold beer.
5. （3） What should Billy do if he feels worse?

   A . Go back to the doctor. B . Go to the emergency room. C . Take another kind of medicine.