患者，男，40岁，饮酒后突发腹痛24小时，腹痛剧烈，呈持续性，腹痛从上腹部很快波及全腹，伴恶心，呕吐。查体：腹部膨隆，全腹肌紧张，有压痛及反跳痛，脐周Cullen征（+），血清淀粉酶8500U/L，决定手术治疗，术中常用处理措施中最重要的是（）。

A.空肠造瘘或胃造瘘

B.探查并解除胆道梗阻

C.探查并处理腹膜后积液

D.用甲硝唑和生理盐水冲洗腹腔

E.坏死组织清除加引流术

Most people have no idea of the hard work and worry that gointothe collecting of those fascinating birds and animals that they pay to see in the zoo.One of the questions that is always asked of me is 1 I became an animal collector in the first 2.The answer is that I have always been interested in animals and zoos.According to my parents, the first word I was able to say with any 3 was not the conventional “mamma” or “daddy”,4 the word “zoo”, which I would 5 over and over again with a shrill 6 until someone, ingroupsto 7 me up, would take me to the zoo.When I 8 a little older, we lived in Greece and I had a great 9 of pets, ranging from owls to seahorses, and I spent all my spare time 10 the countryside in search of fresh specimens to 11 to my collection of pets.12 on I went for a year to the City Zoo, as a student 13 , to get experience of the large animals, such as lions, bears, bison and ostriches,14 were not easy to keep at home.When I left, I 15 had enough money of my own to be able to 16 my first trip and I have been going 17 ever since then.Though a collector's job is not an easy one and is full of 18 ,it is certainly a job which will appeal 19 all those who love animals and 20.

请在12处填上正确答案（）

A.later

B.further

C.then

D.subsequently