欧式期权的持有者可以在期权到期日前的任何一个工作日执行该期权。()
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A．Roy is standing in line for a gold medal.B．Roy was the best, so he got a gold medal.C
A. Roy is standing in line for a gold medal.
B. Roy was the best, so he got a gold medal.
C. Nobody's better than Roy at getting gold medals.
D. Roy probably won't win a gold medal.
A．He has changed his plan.B．He has canceled his trip.C．He is arriving this afternoon.D．
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.
芝加哥交易所在刚成立时就是一个市场。()
A. 正确
B. 错误
【B5】
A. converge
B. contract
C. contradict
D. control
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