Corruption is _______ problem in countries across the world, with developing countries often believed to be more serious, although there is no evidence to suggest this is _______case.

A．a; the

B．the; a

C．不填; the

D．a; a

肺胀患者，出现肺部感染，右心衰竭、呼吸衰竭。应首选的治疗措施是（）

A．纠正缺氧

B．纠正呼吸衰竭

C．治疗原发病

D．抗感染

E．纠正心衰