－How did you find those days.

－The days________we spent together on the farm are not easy________．

A．that；to forget

B．when；to be forgotten

C．when；to forget

D．that；to be forgotten

在胰腺炎的发病机制中：

弹力纤维酶()
磷脂酶()
胰血管舒缓素()

A．急性出血坏死型胰腺炎时血管扩张、通透性增加，局部渗出及循环障碍

B．急性出血坏死型胰腺炎时血管破坏，引起出血、坏死

C．急性出血坏死型胰腺炎时细胞膜破坏

D．急性出血坏死型胰腺炎时脂肪坏死

E．急性出血坏死型胰腺炎时抑制心肌