腹泻（）。
A.硫糖铝
B.阿托品
C.枸橼酸铋钾
D.法莫替丁
E.米索前列醇
参考答案：E
--You should have thanked her before you left.
---I meant _______. But when I was leaving I couldn’t find her anywhere.
A．to do
B．to
C．doing
D．doing so
下列哪项检查对诊断最有帮助
A．头部CT
B．血维生素B12浓度测定
C．腰穿
D．肌电图
E．腰椎MRI脊髓血管造影
