单项选择题

[听力原文]
M: Shall we go to the airport to meet Dr. Smith this afternoon
W: Oh, I forgot to tell you. He has put off his trip.
What do we know about Dr. Smith（）

A．He has changed his plan.
B．He has canceled his trip.
C．He is arriving this afternoon.
D．He forgot to arrange his trip.

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What qualifications are neededCPA with at least 10 years（）

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[听力原文] M: Shall we go to the airport to meet Dr. Smith this afternoon W: Oh, I forgot to tell you. He has put off his trip. What do we know about Dr. Smith（） 您的浏览器不支持 audio 元素。