Sam has been appointed ________ manager of the engineering department to take ________ place of George.(2012·重庆)

A．/；/

B．the；/

C．the；the

D．/；the

患者，女性，25岁，从台阶上摔倒，颏部先着地。检查：牙无明显松动，前牙开，后牙早接触，未扪及台阶和骨异常动度。最有可能的骨折是（）

A.颏部骨折

B.下颌角部骨折

C.颏孔区骨折

D.牙槽突骨折

E.髁突骨折