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

A．The personnel manager should be fired for inefficiency.
B．A few engineers should be employed to modernize the factory.
C．The entire staff should be retrained.
D．Better-educated employees should be promoted.

A．exchange of ideas
B．exchange of facts
C．exchanges about health and weather
D．exchanges for maintaining social relationship