I’m terribly sorry to turn you down this time, but I promise I will _________ to you next time.

A．pick it up　　

B．make it up

C．turn it up　　

D．set it up

生猪的产地检疫对象有（）。

A、口蹄疫

B、猪瘟

C、高致病性猪蓝耳病

D、猪链球菌病