— Did you scold him for his carelessness?

— Yes,   but________ it. [      ]

A. I would rather not do

B. I'd rather not have done

C. I shouldn't do

D. I'd better not do

女，3岁，支气管哮喘持续状态1d，动脉血气分析pH7.5，PaCO₂ 70 mmHg，PaO₂ 50mmHg，BE-5 mmol/L，HCO₃-18mmol/L，其酸碱紊乱类型是

A．呼吸性酸中毒

B．代谢性酸中毒

C．呼吸性酸中毒合并代谢性酸中毒

D．代偿性呼吸性酸中毒

E．代谢性碱中毒