—What do you think of the manager of your company?

—Oh，he is ________ manager who's pleasant to work with.It's ________ pleasure to work with him.

A．the；a

B．a；a

C．a；the

D．/；a

( )是指在出售证券时，与证券的购买商签订协议，约定在一定期限后按原价或约定价格购回所卖证券，从而获得即时可用资金的一种交易行为。

A．同业拆借

B．商业票据买卖

C．银行承兑汇票买卖

D．回购