What _______ honest boy! And he is_______ best student of all. [ ]

A. a; a

B. an; the

C. a; the

D. the; the

下列哪项可出现主动脉夹层（）

A.韦格纳肉芽肿病

B.显微镜下型多血管炎

C.结节性多动脉炎

D.变应性肉芽肿性血管炎

E.Takayasu（高安）动脉炎