看跌期权的买方具有在约定期限内按（）卖出一定数量金融资产权利
A.协议价格
B.期权价格
C.市场价格
D.期权费加买入价格
参考答案：A
简述生态补偿的概念、补偿原则、条件与补偿类型。
No one believes his reasons for being late that he was caught in a traffic jam, _______ made him embarrassed.
A．it
B．which
C．that
D．why
