题目：
色石渣是由天然大理石及其他石粒破碎筛分而成。( )
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A解析：In a cash settlement forward contract there is a cash payment at settlement by either the long or the short depending on whether the market price of the asset is below or above the contract price at expiration. The underlying asset is not purchased or sold at settlement.
