_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.

A．A; a

B．The; /

C．/; the

D．A; the

从前鼻棘至蝶窦前壁的距离一般不超过（）

A.5cm

B.6cm

C.7cm

D.8cm

E.9cm