—It's _____ in the sea, I feel very nervous.                

—Don't worry, you'll _____ it soon.                  [ ]

A. the first time swim, get used to do

B. my first time swimming, used to

C. my first time swimming, become used to

加油站零售业务进行日结操作时，加油站的各种销售业务应相对静止，加油机和便利店收银POS机均不在操作状态。同一个加油站内，下列（）的日结时点必须完全一致。

A.IC卡卡管系统

B.便利店管理系统

C.零售账表册系统

D.POS刷卡时点