单项选择题

Questions 8 to 11 are based on the conversation you have just heard.

A．More than twenty minutes.
B．At least eight minutes.
C．About twelve minutes.
D．Less than twenty-eight minutes.
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单项选择题
A．To relieve its traffic congestion.B．To lessen its environmental problem.C．To guarantee drivers safety on the road.D．To improve the public transport system.
A．To relieve its traffic congestion.
B．To lessen its environmental problem.
C．To guarantee drivers" safety on the road.
D．To improve the public transport system.
单项选择题
A．To call the Amazon Company.B．To check the spelling and grammar.C．To reset passwords frequently.D．To delete the email directly.
A．To call the Amazon Company.
B．To check the spelling and grammar.
C．To reset passwords frequently.
D．To delete the email directly.
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