--I don’t know       .

-- You can go and ask Jack.

A．when does the train leave

B．that we will plant trees or not

C．if she had come yesterday

D．what I should buy for him

男性，38岁，长期喜爱用锡壶热酒饮用，近期出现头晕、头痛、睡眠不安、疲倦乏力，体检：牙龈缘黏膜内可见点状深灰色颗粒沉积，心肺（-）。化验示贫血。最有效的治疗药物是（）

A.氯解磷定

B.依地酸钙钠

C.激素

D.亚甲蓝

E.，纳洛酮