25．Children  often form some bad habits, ____________remain with them as ling as they live.

A．some of them

B．some of which

C．any of them

D．any of which

具有高等学校医学专业本科以上学历，在执业医师指导下，在医疗、预防、保健机构试用期满（）年可参加执业医师资格考试

A.一年

B.二年

C.三年

D.四年

E.五年