Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．The common features of both insect and human societies.
B．The differences between insect society and human society.
C．The role differences in human society.
D．The reasons why human beings are superior to insects.

A．Just get the treatment from the first doctor.
B．Take a different kind of medicine.
C．Ask another doctor for advice.
D．To get treatment from another doctor in the same hospital.