Zhang Man is a girl. _____ is my little sister. [ ]
A. He
B. She's
C. She
D. It
答案:C
酮症酸中毒时首选的药物是()
A.D860
B.降糖片
C.优降糖
D.胰岛素
E.达美康
操作系统是硬件与用户之间的接口。