对于商品期货交易来说，期货合约成功交易的关键是工正确解决资金问题。()
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What does the word "they" (Para. 3) refer to？
A. the layers
B. wind-blow]a deposits
C. volcanic eruptions
D. the terrestrial rocks
在正向市场牛市套利中，如果近期和远期合约价格均下降，则交易者绝对不可能获利。 ()
A. 正确
B. 错误
A．He slept in the office.B．He went shopping for a clothes.C．He went to Mary's house to
A. He slept in the office.
B. He went shopping for a clothes.
C. He went to Mary's house to see him.
D. He did nothing at all.
期货套期保值交易涉及现货市场和期货市场两个市场的交易，而套利交易只涉及在期货市场的交易。()
A. 正确
B. 错误
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