--Mum, I can’t do the washing on my own. It’s too difficult.

--All right. I ______ you with it.

A．am helping

B．am going to help

C．am to help

D．will help

慢性阻塞性肺气肿最主要的并发症是

A．纤维素性肺炎
B．肺源性心脏病
C．肺脓肿
D．肺肉质变
E．肺萎缩