单项选择题

A．Call on people to protect sharks.
B．Point out the living environment of sharks.
C．Explain why the sharks are dangerous.
D．An introduction to sharks.
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单项选择题
A．Buy a ticket.B．Leave at once.C．Get ready immediately.D．Call a taxi.
A．Buy a ticket.
B．Leave at once.
C．Get ready immediately.
D．Call a taxi.
单项选择题
A．Memories of a recent storm.B．How strong winds develop into a hurricane.C．Weather patterns that can affect Florida.D．Planning a summer vacation.
A．Memories of a recent storm.
B．How strong winds develop into a hurricane.
C．Weather patterns that can affect Florida.
D．Planning a summer vacation.
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