---Did you get to school on time yesterday?

--- No. An unexpected heavy rain ______  the bus ______the station on time.

A．allowed, reaching

B．stopped, reaching

C．stopped, to reach

D．kept, reaching

中央银行运用货币政策手段影响中介目标进而实现最终目标的途径和机能称为()。

A.货币政策目标

B.货币政策工具

C.货币政策影响力

D.货币政策传导机制