He sleeps with his eyes _______ and mouth ________.

A．close; open

B．close; opened

C．closed;opened

D．closed;open

皮下注射胰岛素经常更换部位，目的是

A．防止注射部位组织硬化

B．防止注射部位脂肪萎缩

C．防止胰岛素过敏反应

D．防止发生低血糖

E．防止胰岛素吸收不良