Questions 33 to 35 are based on the passage you have just heard.

A．To state strongly that it is illegal to demonstrate.
B．To reiterate the opinion that the demonstration is for the wrong cause.
C．To convince the man that the issues are really complex.
D．To support her reasoning for not going to a demonstration.

A．doctor and nurse.
B．Librarian and library patron.
C．Forest ranger and hiker.
D．Nurse and patient.