人教版必修5Unit5 First aid Using Language(共16张PPT)
人教版必修5Unit5 First aid Using Language(共16张PPT)第3页

Your friend has an asthma(哮喘) attack, but she doesn’t have her medicine. You’d better: A. Get a paper bag for her to breathe into. B. Get her a cup of coffee. C. Take her outside for fresh air.

咖啡因对气管扩张有效。