Hearing the boring news, I was too distracted （心烦意乱）to        my attention on my homework.

A．attract

B．draw

C．concentrate

D．pay

吗啡类中毒，选用的解毒剂是（）

A．二巯丁二钠

B．亚甲蓝

C．氯解磷定

D．氟马西尼

E．盐酸纳洛酮