单选题：Horse-racing fans cannot be considered sportsmen because th

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题目内容：
Horse-racing fans cannot be considered sportsmen because they are spectators whose primary interest is gambling. A．Right
B．Wrong
C．Not mentioned
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对执行价格与期权合约标的物的市场价格的描述不正确的有（　　）。A．执行价格与市场价格的绝对差额决定了内涵价值的有无及其大小 B．就看跌期权而言，市场价格超过执行

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