单项选择题

A．Guarding the coasts of the United States.
B．Being part of the United States Navy.
C．Guiding people along the coast.
D．Protecting people from army attack.
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单项选择题
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．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.
单项选择题
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 telephon
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 telephon
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