7. ---- Mum, why do you always make me eat an egg every day?

---- _________ enough protein and nutrition as you are growing up.

A．To get

B．Get

C．Getting

D．To be getting

患者，男，68岁，咳嗽、气急、口唇轻度发绀，肺部可闻干、湿啰音，动脉血气示PaCO₂70mmHg，PaO₂66mHg，pH7.30，最可能的临床状况是（）

A.呼吸性酸中毒

B.呼吸性碱中毒

C.呼吸性酸中毒伴低氧血症

D.呼吸性碱中毒伴低氧血症

E.低氧血症