缺铁性贫血应用铁剂停药原则为

A．服至临床症状好转

B．服至血清铁蛋白＞12μg/L

C．服至Hb正常后3～6个月

D．服至Hb正常后1年

E．服至HB及RBC正常为止

This novel can make you laugh and cry at _____ same time. [ ]

A. a

B. an

C. the

D. /