The old engineer's eyes still shone bright in the wrinkled brown face and his step as he came across

the room was ________, though slow. [ ]

A. shaky  

B. heavy

C. casual  

D. steady

男性，27岁。急性四肢弛缓性瘫痪伴四肢末端可疑对称性痛觉减退2周。下列各项检查有助于诊断及鉴别诊断，除外（）

A.血清钾检查

B.腰穿查脑脊液蛋白、细胞

C.肌电图检查

D.血清肌酶检查

E.血清皮质醇及尿17-羟检查