依据采取措施的性质不同，损失控制可以分为( )。

A．损失发生前、损失发生时、损失发生后

B．损失避免和损失抑制

C．损失预防和损失避免

D．工程法和行为法

-What’s the matter with John? He has been sitting there for hours.

-A postcard from his father   an attack of home-sickness in him.

A．took up

B．set off

C．brought in

D．built up