Has it been warned that all the children in this area      stay at their homes until the Flu has been controlled ?

A．can

B．will

C．may

D．shall

男性，58岁，反复咳嗽、咳白黏痰10年，冬季症状加重。查体：两下肺湿啰音，有散在的哮鸣音。诊断首先考虑（）

A.肺结核

B.支气管扩张

C.支气管哮喘

D.慢性支气管炎

E.支气管肺癌