It was the third time that she_____ to this mountain village to see the children.    [ ]

A. had come                        

B. has come    

C. came                            

D. would come

诊断三期内痔的主要依据是：（）

A.痔核巨大

B.出血量多

C.病程长，痔核脱出

D.肛门松弛

E.痔核脱出，需用手退回