Jiangsu Province ____ a series of activities to protect water resources over the past few months. Early this year, several cities ___ citizens to use new types of toilet equipment.

A．organised; called for

B．has organised; called for

C．organised; has called for

D．has organised; has called for

行政学的成熟与分化阶段受到了( )的重大影响。

A．工商企业理论

B．行为科学理论

C．系统科学理论

D．经济管理科学