单项选择题

Passage One Questions 11 to 14 are based on the passage you have just heard.

A．Platform worker.
B．The command spot.
C．A computer.
D．A machine.
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单项选择题
A．A professor and a student.B．A hotel manager and a tourist.C．A salesman and a customer. D．A store owner and his manager.
A．A professor and a student.
B．A hotel manager and a tourist.
C．A salesman and a customer.
D．A store owner and his manager.
单项选择题
A．To go shopping. B．To operate computers.C．To help do something. D．To shop electronically.
A．To go shopping.
B．To operate computers.
C．To help do something.
D．To shop electronically.
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