Only ticket-holders were ______ to the stadium for the concert given by Jay Chou,

so many of his fans were turned away. [ ]

A. allowed

B. asked

C. agreed

D. admitted

最常与重症肌无力同时存在的疾病有（）

A.甲状腺炎

B.甲状腺功能亢进

C.胸腺肿瘤或胸腺增殖

D.系统性红斑狼疮

E.多发性肌炎