The two friends are ________ related like the lips and teeth, and you can often see them stay ________ together, hand in hand

A．close; close

B．close; closely

C．closely; close

D．closely; closely

该患者血气分析最可能出现的是

A．血pH和HCO₃ˉ降低，PCO₂升高

B．血PCO₂和HCO₃ˉ降低，pH正常

C．血pH、PCO₂、HCO₃ˉ均降低

D．血pH和PCO₂降低，HCO₃降低

E．血pH、PCO₂、HCO₃ˉ均升高