—Can they swim in the lake?

—                [ ]

A. Yes, they do            

B. No, they don't

C. Yes, they can          

D. No, they didn't

以下病变不属于肺先天性疾病的是（）

A.肺动静脉瘘

B.肺隔离症

C.胰肺囊性纤维化

D.一侧肺不发育

E.肺气肿