Questions 11 to 18 are based on the passage you have just heard.

A．Mating habits of squid and octopus.
B．The evolution of certain forms of sea life.
C．The study of marine shells.
D．Survival skills of sea creatures.

A．Have to buy a special electronic ticket.
B．Have to travel a long way to visit the university.
C．Need art expensive device designed especially for the museum.
D．Need a computer linked to a telephone.