.She is _______ mother, no woman could take better care of her children.

A．model

B．modal

C．medal

D．modest

适合低流量持续吸氧的是

A．急性肺水肿

B．慢性支气管炎肺气肿并发呼吸衰竭

C．休克型肺炎

D．自发性气胸

E．急性上呼吸道感染