人工流产术常见的并发症不包括（）

A.子宫内膜异位症

B.感染

C.子宫穿孔

D.术中出血

E.空吸

---Try to remember to turn off the light when you leave the room.

---I’m trying to    expenses.

A．keep off

B．keep down

C．keep out

D．keep from