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

A．The number of roles human beings play is much more than that of insects.
B．The roles human beings play is more important.
C．The insects have fewer opportunities to change their roles.
D．Different individual performs different functions in human society but not the case in insect society.

A．The man will ask the woman to show the guarantee.
B．The man will ask the woman to show the receipt.
C．The man will replace the woman’s camera.
D．The man will adjust the camera’s lens.