15．Not only fashion and music are making a return-houses built in 1970s have proven to be better at cutting energy waste than those built today．The"tea cosy （茶壶套）"design，created in the mid-1970s and built in the early 1980s for low-income people，could provide a blueprint for meeting the Government aims of producing less CO2 from homes．
The 200 houses were designed to provide low-energy housing，and depend on an inner concrete （水泥） structure that holds in heat，protected by highly insulated （隔热的） setting which produces a"tea cosy"effect．The ordinary-looking houses also depend on more windows on south-facing sides，with northerly facing doors protected by porches （门廊）．
A study found the houses are 50 percent more energy efficient than the average home and use a quarter of the average energy for space heating．According to researchers，they use less than two-thirds of the power of homes built to meet 2010 building demands．And they will still be 25 percent more efficient than houses built to even more strict proposed demands for 2013．The design is one of the few that will be able to meet 2016 demands for zero-carbon homes．
They were in the beginning fixed with just one or two gas heaters per home，although most now have central heating，depending on the heat from the sun and high insulation to keep steady temperatures inside the house．To be comfortable，they only need to use heating for three to four months a year，compared with seven months for UK home on average，and can be lived with no heating at all．
With many house builders at present worrying that new homes are going to be much more expensive to build in order to meet the Government's ambitious targets，the"tea cosy"model meets this need perfectly．
19．The underlined word"blueprint"is closest in meaning toB．
A．photo B．model C．service D．map
20．The writer develops Paragraph 3 mainly byD．
A．analyzing data
B．giving examples
C．presenting reasons
D．making comparisons
21．According to the passage，"tea cosy"houses are better atA．
A．saving heat for energy efficiency
B．producing solar energy at home
C．designing and building materials
D．saving building materials and energy．
分析 本文描述了20世纪70年代的茶壶盖房屋设计更能满足现在高标准严要求的建房，而且通过比较可以看出这些茶壶盖房屋设计更节能减排和环保．
解答 19．B 词义猜测题 根据第一段的意思茶壶盖房屋设计能为满足政府减排的目的提供一个蓝本，接下来一段描述茶壶盖房屋设计用于当前房屋的设计模式，故划线单词的意思是模型，故答案为B
20．D 细节理解题 根据第三段通过比较说明按照茶壶盖模式设计的房屋比一般的房屋，2010年建房标准及更严格的2013建房标准的房屋更节能，故第三段是通过比较展开叙述的，故选D
21．A 推理判断题 根据文章第三段的比较和第四段的描述可以看出茶壶盖房屋设计的房子擅长节能，故A正确．
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释．考生首先要仔细阅读短文，完整了解信息，准确把握作者观点．
