患者张某，支气管炎病史10年，现咳嗽、咳脓痰，经痰培养进行药物敏感试验证实对青霉素药物敏感。请写出3种给药途径并回答下列问题

是否3种给药途径在给药前均需做青霉素过敏试验？

Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.

A.at work，only

B.in his or her berthing area，only

C.BOTH at work and in his or her berthing area

D.None of the above