They don't feel safe in our town at night because it _____ so dangerous. There's a robbery every week now.[ ]

A. becomes

B. became

C. has become

D. had become

患者男性，3岁，因“腹泻”来诊。门诊医师开具环丙沙星注射液50ml，静脉滴注，药师按医嘱抄写注射单。药房环丙沙星注射液规格为100ml（0.2g）/瓶。少量滴注时，患儿开始哭闹，注射部位肿胀，护士重新进针后把100ml环丙沙星全部滴注。回家后患儿哭闹不安，患者家属咨询专业人员后，状告医院并要求经济赔偿。

本案例用药差错属于（）

A.给错药物

B.给错患者

C.给错剂量

D.给错用药途径

E.给错时间

F.给错剂型

G.给药用法