单项选择题

Questions 12 to 18 are based on the conversation you have just heard.

A．One.
B．Three.
C．Seven.
D．Eleven.
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单项选择题
A．He won the first prize.B．He died because of fatigue.C．He fell behind the other runners.D．He gave up because he was tired.
A．He won the first prize.
B．He died because of fatigue.
C．He fell behind the other runners.
D．He gave up because he was tired.
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