Many of them turned a deaf ear to his advice,____they knew it to be valuable.    [ ]

A.   as if    

B．now that    

C．even though    

D．so that

针对备用金管理必须做到（）

A.班班清点，帐实相符

B.监控镜头下清点，当场签字确认

C.备用金按规定存放保险箱

D.金额不足时由班长统一领用