Marry _____ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.

A．has served

B．had served

C．has been served

D．served

如何加大投入强度和工作力度，持续推动农业稳定发展（）

A、毫不放松抓好粮食生产

B、狠抓“菜篮子”产品供给

C、加大农业投入和补贴力度

D、完善农业直补制度

E、提升农村金融服务水平

F、稳定和完善农村土地政策