题文
A town in Oxfordshire has become the first in the UK to have biomethane(生物甲烷)gas from human waste piped to their homes for gas central heating and cooking．Up to 200 families in Didcot now receive the gas via the national gas power system. Head of energy and technology at British Gas，Martin Orrill，said customers wouldn’t notice any difference as the gas is purified to the highest standard and has no smell．The gas is produced at a sewage(污物) treatment works in Didcot．
The entire process takes only less than three weeks, with the sewage being collected and sent first to settlement tanks．The solid waste material is then fed into digesters, where anaerobic bacteria(厌氧菌)digest the sewage，with the aid of enzymes(酶)to speed up the process．The digestion process produces methane，which can be burned to drive machines(甲烷)to prod
uce electricity，or can be purified and fed into the gas network and piped to homes and businesses. British Gas says supplying the gas rather than electricity is far more efficient since around two-thirds of the energy is lost in producing electricity.
Partners in the Didcot project，British Gas，Scotia Gas Network，and Thames Water，all hope to expand the process to other towns，and other companies such as Ecotricity and United Utilities have also announced biomethane projects being planned．One of these projects in Manchester could be supplying 500 homes with biometh
ane by mid next year. Another British Gas project in Suffolk will provide gas from digestion of brewery(啤酒厂)waste to around 235 families．
The Didcot project cost￡25 million and was influenced by promises of government aids aimed at encouraging companies to develop renewable technologies．An EU directive means the UK must ensure at least 15 percent of its energy is from renewable sources by 2020．
The UK produces about 1.73 million tons of sewage annually．If all sewage treatment works in the UK were fitted with the technology，they could supply gas for up to 350, 000 families.
小题1:. Which of the following is TRUE of the biomethane gas?A．it’s mainly made from rotting plantsB．It’s an environmentally friendly gasC．Its production process is too longD．It’s easily recognized by customers小题2:. What is the function of the enzymes? A．To digest the solid waste materialB．To help get rid of anaerobic bacteriaC．To help purify the biomethane．D．To speed up the digestion process．小题3:. According to the passage，the biomethane gas had better be used .A．as the power for vehiclesB．for heating and cookingC．to produce electricityD．to drive a variety of machines小题4:. The last three paragraphs mainly show that .A．the UK government supports the biomethane projectsB．the biomethane projects are very costlyC．the biomethane projects still face many barriersD．the biomethane project
s are promising小题5:. . What should the text belong to?A．Computer scienceB．EngineeringC．EnergyD．Business 题型：未知 难度：其他题型
答案
小题1:.B
小题1:.D
小题1:.B
小题1:.D
小题1:.C
解析
略考点
据考高分专家说，试题“A town in Oxfordshir.....”主要考查你对 [政治经济类阅读 ]考点的理解。政治经济类阅读
政治经济类文章的概念：
要做好这类阅读，平时就要注意了解国内外发生的政治经济大事，掌握一定背景知识，对这类文章的叙述特点及内容安排有一定了解，还要扩展这方面的词汇。阅读这类文章，要抓住文章的核心，即文章整体和各段主要在说什么，也要注意段落之间的逻辑关系。
如何备考政治经济类阅读理解题：
【题型说明】政治经济类阅读文章是高考常选材料之一。该类文章时代气息浓郁，语言鲜活，但熟字新义词、超纲词及专业词语多，长句、难句多。政治类文章大多数是同学们感性趣的内容，读起来倒有似曾相识的感觉，经济类文章读起来就像是雾里看花，文章看完，一头雾水。再加之这类文章的命题侧重于词义猜测、推理判断和文章主旨，同学们对这类题材是望而生畏。
【备考策略】建立心理优势。针对不同体裁的文章，我们要采取相应的阅读方法和技巧。政治类文章多采用记叙文形式，我们可采取“顺读法”，以便抓关键语句，领会文章主旨；而经济类文章则多采用说明文形式，我们则可以采取“逆读法”，先读试题，再从文章中查找有用信息。若遇到的确难读的材料。千万不用着急，因为你觉得难，其他人也一定是同感。在高考前，我们就要有这种心理准备，高考试卷肯定有一、两篇难以阅读的材料。不过，我们平时可以有意识地从报刊杂志上找一些较难的阅读材料来阅读，以培养自己迎难而上的心理素质。
【答题方法】
1、寻找主干：
根据英语中五种基本句型结构，把句子中的主语、谓语、宾语、表语等主要成分找出来，其他成分如定语、状语、补语等则易于理解。找到了句子主干，句子的意思至少明白了一半。
2、剔除从句：
在一个长句中可能会出现若干个从句，在理解时，如果把各个从句剔除出来单独理解，然后把大意拼凑起来，整个长句的意思就会明白六、七分。
3、辨别分句：
一个长句如果是由几个并列、转折、递进、对比关系的分句组成，句中往往有表示这些分句关系的连接词，只要能弄清楚分句和分句之间的逻辑关系，再把各层分句的意思加以连贯，整个长句的句意基本上能跃然脑中。
4、寻找关键词：
如果一个句子看完，一点句意的感觉也没有，下下策就是抓住句中的关键词，通过关键词大体弄懂这个长句的意思。
