代谢性碱中毒时血钾的改变是

A．血钾正常

B．低血钾

C．高血钾

D．与血钾变化无关

E．血钾正常或偏高

–How about going shopping this weekend, Peter?

--Sorry. I prefer        rather than        .

A．to stay at home, go out

B．to go out, stay at home

C．staying at home, go out

D．going out, stay at home