退汇时，接收行只能对状态为（）的业务进行退汇处理.
A.已排队
B.已挂账
C.已接收未记账
参考答案：B
He had to take the medicine three times a day, so as to be _____ pain in the leg. [ ]
A. far from
B. away from
C. apart from
D. free from
如何预防青霉素过敏。
