Professor James will give us a lecture on the Western culture, but when and where __________ yet.

A．hasn’t been decided

B．haven’t decided

C．isn’t being decided

D．aren’t decided

患儿，男性，两岁半，咳嗽，发热两天，体温37.8℃，呼吸困难，口唇发绀，听诊右肺下部有细湿啰音，PaO₂7.6kPa，PaCO₂8kPa，诊断为支气管肺炎。此时首选的护理诊断是（）

A.体温过高

B.营养不足

C.气体交换受损

D.清理呼吸道无效

E.潜在并发症：心衰