— ______ expensive mobile phone it is!

— Yes, but I think ______ style is quite fashionable.[ ]

A. What a; a

B. How; the

C. What an; the

D. How an; the

对"先天性髋脱位"的论述，下列正确的是

A．较常见的先天性畸形，女多于男，左侧比右侧多

B．发病原因迄今不明

C．病理发生在髋臼、股骨头、颈、关节囊的原发性病变和继发性病变

D．治疗越早，效果越好

E．以上都是正确的