The villagers have already known _____ we'll do is to rebuild the bridge. [ ]

A. this

B. that

C. what

D. which

人体初次感染肺结核菌后出现的是（）

A.慢性纤维空洞型肺结核

B.血行播散型肺结核

C.浸润型肺结核

D.原发型肺结核

E.结核性胸膜炎