有助于诊断肌源性肿瘤的标志为()
A.CK
B.desmin
C.vimentin
D.PSA
E.PCNA
参考答案:B
When shall we meet, at 6 : 00 or at 6 : 30 ? --- ______ .
A.At any time
B.You make the time
C.Well, either time will do
D.Any time is OK