有毒的柴胡的原植物为
A．狭叶柴胡
B．柴胡
C．大叶柴胡
D．银州柴胡
E．兴安柴胡
参考答案：C
My car ______ down just when I need it most. I have to get it repaired.
A．always breaks
B．has always broken
C．always broke
D．is always breaking
下列有关Oddis括约肌的阐述正确的有
A．调控胆汁分泌
B．调控胰液分泌
C．调控十二指肠液分泌
D．围绕胆总管十二指肠壁内段和壶腹外层
E．防止十二指肠液反流
