单项选择题

A．When crop failure caused depression.
B．When the autumn harvest had just been completed.
C．When the wheat prices became increasingly high.
D．As soon as the Winnipeg Grain Exchange demanded payment:
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单项选择题
A．A specialist in oil-spill prevention.B．A TV reporter.C．An oil company technician.D．The head of the oil company.
A．A specialist in oil-spill prevention.
B．A TV reporter.
C．An oil company technician.
D．The head of the oil company.
单项选择题
A．To win medals.B．To break world records.C．To win first places.D．To take part in the Games.
A．To win medals.
B．To break world records.
C．To win first places.
D．To take part in the Games.
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