因结核菌大量繁殖可引起变质液化造成病变播散（）

A.经结核菌免疫后的豚鼠再感染结核菌

B.结核病增生为主要病变

C.干酪坏死病变

D.粟粒型肺结核

E.原发综合征

____ surprised me most was to see so many women crying sadly there.

A．That

B．It

C．Which

D．What