下列哪项符合偏头痛的临床特点()
A.老年人多见
B.伴有意识障碍
C.10%有视觉先兆
D.伴有癫痫发作
E.头部CT异常
参考答案:C
鉴别原发性与继发性甲状腺功能减退症,应进行的检查是 ()
A.TSH
B.FT3
C.FT4
D.TT3
E.TT4
______ I failed in English a third time, I had no doubt about my gift for foreign languages.
A.By the time
B.Until
C.After
D.Unless