单项选择题

A．Have to buy a special electronic ticket.B．Need an exp……

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

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单项选择题A．A famous photographer.B．Photographic processes in the 1800s.C．Photographic equipment used in the 1800s.D．A new museum.

A．A famous photographer.
B．Photographic processes in the 1800s.
C．Photographic equipment used in the 1800s.
D．A new museum.

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 enemy attacks.

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 enemy attacks.