Only when they were told the date of the wedding ,____ their daughter would get married.

A．realized they

B．did they realized

C．did they realize

D．they did realize

培训方法中，岗边培训的特点是（）。

A.岗边培训能够立即让被培训者进行操作，以便了解培训是否达到效果

B.通常是一对一进行

C.般是在进行内部检查的同时，针对个别需立即整改的问题开展

D.不宜大规模进行