When the expression first came into being, people refused to use it but _____ they began to accept it.    [ ]

A. usually    

B. gradually  

C. frequently  

D. quickly

营业终了，设有库房的营业机构，柜员现金箱交管库员办理入库手续；不设库房的营业机构，柜员现金箱可采用（）的保管方式。

A.临时保管。

B.固定保管。

C.不“清零”。

D.现金“清零”。