一子宫内膜癌患者行手术治疗，术中见浆膜层见侵犯病灶，宫颈及宫旁未见明显病灶，最可能的分期为（）

A.Ⅰa期

B.Ⅰb期

C.Ⅰc期

D.Ⅱa期

E.Ⅱb期

________is known to us all that the old scientist, for ____________life was hard in the past, still

works hard in his eighties.   [      ]

A. It ; whom                                     

B. As ; whom    

C. As; whose                                  

D. What; whom