Mary hit Jack _____ the head _____ a book.[ ]

A: at; with

B: on; with

C: on; by

D: in; by

治疗脑血栓形成气虚血瘀证的首选方剂是

A．补阳还五汤
B．安宫牛黄丸合羚羊角汤
C．镇肝熄风汤
D．涤痰汤加减送服苏合香丸
E．星蒌承气汤