单选题：Professional baseball teams can continue to play for a long

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题目内容：

Professional baseball teams can continue to play for a long period of time in the fall after the regular baseball seasons of spring and summer. A．Right
B．Wrong
C．Not mentioned

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They strolled around the lake for an hour or so．

They strolled around the lake for an hour or so． A．ran B．rolled C．walked D．raced

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Questions 14-16 are based on the following monologue about

Questions 14-16 are based on the following monologue about Marco Polo’s life as

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期货结算机构的职能有（　　）。

期货结算机构的职能有（　　）。A．计算期货交易盈亏 B．担保交易履行 C．控制市场风险 D．交易所的收益在会员间分配

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交易者在期货市场上的（　　）即为盈利或亏损。

交易者在期货市场上的（　　）即为盈利或亏损。A．合约建仓价格与合约平仓价格之间的差额 B．合约建仓价格与建仓当日的收盘价格之间的差额 C．合约建仓价格与实物交割

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听录音：{MP3:/imgcache/attached/media/20140227/20140227164413_81

听录音：{MP3:/imgcache/attached/media/20140227/20140227164413_8150.mp3}根据以下资料，回答题：F

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