When she was a child, she used to help her mother on the small farm_____ they lived.    [ ]

A. in which    

B. on that      

C. there        

D. where

城镇初高中毕业生在就业前应履行的主要义务有（）

A.参加创业培训

B.参加职业道德培训

C.参加职业纪律培训

D.劳动预备制培训