决策支持系统的简称是（）
A.DSS
B.PMS
C.CIS
D.SCM
参考答案：A
接种卡介苗，可以预防______；接种百白破疫苗可以预防______、______、______；吃“糖丸”可以预防______．
The doctor has ________ the possibility that Justin suffers AIDS.[ ]
A. ruled out
B. searched out
C. worked out
D. looked out
