—Selina, are you____________ member of the swimming club?

—No, but I joined _________art club last month.

A．a; a

B．the; a

C．the; an

D．a; the

糖尿病酮症酸中毒的特征性表现是()

A．食欲减退、恶心呕吐

B．伴头痛、嗜睡、烦躁

C．呼吸深快有烂苹果味

D．皮肤干燥弹性差

E．眼球下陷、失水