-----Do you know what they did over the weekend?  

-----They ________.[ ]

A. play soccer

B. goes to movies

C. went shopping

D. stay home

按疾病诊断分类及轻重程度预先确定费用支付标准的付费方式是（）

A.按病种付费

B.按床日付费

C.按服务人次付费

D.按人头付费

E.总额付费