— "Dear Frank, when will our wedding be?"

— "Ah, when? God knows." He said, and ____ away from her, walked rapidly away. [ ]

A. turning

B. turned

C. turn

D. to turn

先天性甲状腺功能减退症的最主要病因是（）

A.甲状腺不发育或发育不良

B.甲状腺激素合成途径缺陷

C.激素缺乏

D.孕母服用抗甲状腺药物

E.碘缺乏