商业企业经营活动的特点是包括（）三个环节。
A.供、产、销
B.进、销、存
C.供、产、存
D.供、销、存
参考答案：B
保密原则应除外（）
A.患者隐私
B.家庭隐私
C.告知家属
D.患者提出保密的不良诊断
E.患者提出保密的预后判断
My parents moved out of their old home sometime last year after they had celebrated their 50th year there.
A．anniversary
B．years old
C．age
D．wedding
