Passage Two Questions 29 to 31 are based on the passage you have just heard.

A．Because a headman had no legal authority.
B．Because people didn’t own land.
C．Because there were no strict laws against homicide.
D．Because there were limited resources.

A．The class thought the demonstration was too complex.
B．Too many students showed up.
C．The professor didn’t show up.
D．The professor cancelled it.