— I’m really glad to see you back.. ______ your trip to the valley interesting?

— No. it ______ very heavily there the whole time.

A．Was; was raining

B．Is; had rained

C．Was; was to rain

D．Is; has been raining

风险管理的基本程序包括( )。

A．风险识别

B．风险估测

C．风险评价

D．风险中和

E．管理效果评价