单项选择题

Questions 11-13 are based on the following dialogue about post service. How long did it take for a letter to get to the USA six years ago

A．Usually four or five days.
B．A week.
C．More than a week.
D．It depends.
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单项选择题
Where does the conversation most probably take place
A．In a post office.
B．In a hotel.
C．In a bank.
D．In a supermarket.
单项选择题
Which of the following is the author in favour of
A．Airline food.
B．Drug smugglers.
C．Bears.
D．Bears in zoos.
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