Professor Yi Zhongtian (易中天教授)             to the Talk Show on CCTV-1 last weekend. [ ]

A. invites

B. invited

C. was invited

D. was being invited

黄体发育不良，病理变化为( )

A．经前期子宫内膜呈增生期变化
B．经前期子宫内膜分泌反应不良
C．月经期第5～6天子宫内膜仍可见分泌反应
D．子宫内膜不典型增生过长
E．萎缩型子宫内膜