在下列金融衍生工具中，哪类金融工具交易者的风险与收益是不对称的（）。
A.远期合约
B.期货合约
C.期权合约
D.互换合约
参考答案：C
---You seem to have been impressed by his words.
---No, not exactly. It was what he did _____ what he said struck me most.
A．rather than
B．other than
C．more than
D．but also
乳化炸药的“四部分”为（）、（）、（）、密度调节剂，构成一个连续相，两个（）相。
