肝硬化是一种什么病？病因是什么？
参考答案：
肝硬化是一种常见的由不同病因引起的慢性、进行性、弥漫性肝病。是在肝细胞广泛变性和坏死基础上产生肝脏纤维组织弥漫性增生，并形成再生结节和假小叶，导致肝小叶正常结构和血管解剖的破坏。病变逐渐进展，晚期出现肝功能衰竭、门静脉高压和多种并发症，死亡率高。
病因
1.病毒性肝炎
2.慢性酒精中毒
3.非酒精性脂肪性肝炎
4.胆汁淤积
5.药物或毒物
6.肝脏血液循环障碍
7.遗传和代谢性疾病
8.自身免疫性慢性肝炎
9.血吸虫病
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| It is well known that the English go out with an umbrella or a raincoat. Why? 1 the weather in Britain often changes quickly. It is not very usual for the same kind of weather to 2 long. Spring can be rainy or windy, 3 the weather is getting warmer and you can hope more sunny days. In fact, there 4 as much sunshine in spring as in summer. Summer is 5 time for visitors to go to the seaside and other places of interest. The weather can be sunny and nice. People often go out to have a walk or swim. Fall is a beautiful season 6 trees in the woods and parks changing color. During fall it is still nice to be outside, too. In winter, it gets colder. It might snow, especially on high land and in the north. There are 7 very high winds in this season. January and February are the coldest 8 of the year, while the warmest 9 often July and August. The difference 10 temperature between winter and summer is not so great, winter is about 45℃, and for summer about 15.5 ℃. | ||||
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