There’s a whole lot of things that people fill their stomachs with. Some of them keep people alive. Some of them taste good to people. Some of them help people win pie-eating contests. Alcohol does none of these things. Why do people keep drinking it ? And what does it do once it gets to their stomachs ?
There are all kinds of alcohol molecules
(分子), but the one that people most often pour down their throat is ethanol (乙醇). Ethanol is very tiny and it dissolves in water , so it gets into all sorts of places that it’s not supposed to. Alcohol heads for the digestive system . Because it dissolves in water , it can get into the water in the bloodstream . Because ethanol , to a certain extent , can pass through cell membranes (膜). It can go almost anywhere . It spreads through the muscles , and is sweated --- unmetabolized(未经新陈代谢的) and whole --- through the skin. It gets into the heart . It even takes a walk through the brain , and this is the secret of its powers.
Alcohol depresses the nerves , and the nerves affect almost every area of the body . Enough alcohol makes people sleep , so people who become unconscious choke on their own vomit (呕吐物) . Most worryingly , enough alcohol can shut down those parts of the brain just like any other parts. People become unconscious and their brains simply forget to breathe.
Alcohol is broken down in the liver. Alcohol doesn’t destroy the liver , but products that the liver breaks the alcohol into do cause damage. A glass of wine per day can not do any harm . Instead , it can prevent heart attacks or can make someone functionally young. And it is kind of nice to know that sometimes, relaxation and cheer can be bottled . All that’s needed is to take care how much alcohol is let into a person’s brain .
【2017届高三英语百所名校好题速递分项解析汇编(第01期):专题01 阅读理解(教师版)】相关文章:
★ 湖南省长沙县实验中学2016届高三英语二轮复习书面表达复习重点话题指导专题15 生活习惯话题指导(学生版)
★ 浙江省湖州市2014高考英语阅读理解一轮(暑假)精炼(17)含答案
★ 2017届高考英语二轮复习大题冲关秘籍语法填空:名校模拟(含解析)
★ 2017年高考英语二轮复习精品资料:专题16 书面表达(教学案)(教师版)
★ 2017年高考英语二轮复习精品资料:专题15 完形填空(教学案)(原卷版)
★ 2017年高考英语二轮复习精品资料:专题14 阅读理解(教学案)(原卷版)
★ 【三维设计】2017届高考英语(江苏专用)二轮复习阅读理解解题技法示范课件:3
★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五:考纲解读(含解析)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21