The best known Australian animal is ______.

A．Critics are greater in number than people enjoying the new way of life.
B．Student critics are greater in number than critics in other fields.
C．Student critics have, on occasion, resorted to violent means against the trend.
D．Critics are concerned solely with the present and not the future.

A．Racial difference.
B．Civilization difference.
C．Cultural difference.
D．Biological difference.