公安部规定，对已经流入经营企业的达不到抗爆性能检测指标的农用硝酸铵，应（）。

A.立即收缴

B.立即销毁

C.责令退回生产企业做改性处理

D.尽快销售完毕

The movie had an interesting ending; the grandfather ___.

A．gave hime a punch at the nose

B．gave a punch to him by the nose

C．gave him a punch on the nose

D．gave him a punch on his nose