单项选择题


Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．It’s Columbus’ pure luck.
B．It proves that the earth is not round.
C．It enriched the American people.
D．It’s one of the biggest lucky mistakes.
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单项选择题
A．To teach young athletes how to avoid burnout.B．To persuade young children not to worry about criticism.C．To stress the importance of positive reinforcement to children.D．To discuss the skill of combining criticism with encouragement.
A．To teach young athletes how to avoid burnout.
B．To persuade young children not to worry about criticism.
C．To stress the importance of positive reinforcement to children.
D．To discuss the skill of combining criticism with encouragement.
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vehicles
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