--Is Bob still performing ?

--I’m afraid not . He is said       the stage already as he has become an official.

A．to have left

B．to leave

C．to have been left

D．to be left

利率互换交易的现金流错配风险是指（）。

A.未能在理想的价格点位或交易时刻完成买卖

B.对手方违约的风险

C.前端参考利率的现金流不能被后端的现金流所抵销

D.预期利率下降，实际利率却上升