— How can you use my computer without my permission?

— Oh, I ______ to tell you. I hope you don't mind. [ ]

A. forget

B. forgot

C. had forgotten

D. am forgetting

右前斜位吞钡检查，食管前缘看不见的压迹是（）。

A.主动脉弓压迹

B.左支气管压迹

C.肺动脉段压迹

D.左心房压迹

E.降主动脉压迹