My uncle, as ____ easy-going gentleman, did give me ______surprise when he lost his temper at the

family party last night.[ ]

A. an; 不填

B. the; a

C. an; a

D. 不填; a

秦沈客运专线上首次采用（）新型提速道岔。

A.18号

B.30号

C.38号

D.42号