2. 外语
  3. The cost of heating your home, particularly during the colder winter months, makes up about 60% of energy bills. If you need a n

The cost of heating your home, particularly during the colder winter months, makes up about 60% of energy bills. If you need a n

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问题     The cost of heating your home, particularly during the colder winter months, makes up about 60% of energy bills. If you need a new boiler (锅炉), make sure you buy one of the best boiler brands.
    The first question you should ask yourself if you want the most energy efficient boiler is what type of boiler you should buy. All modern boilers that you can buy are condensing (冷凝式) boilers, which are much more efficient than traditional non-condensing boilers. According to a study, you could save as much as £ 340 a year on your gas bill if you’re trading in an old-style non-condensing boiler for a new condensing one.
    Getting the wrong type of boiler for your home results in unnecessarily high bills. Learn more about the different types of boiler and which would suit you best in our full guide to the different types of boiler.
    Once you’ve decided on the type of boiler you need, the next key question is the size. The size of the boiler in the context of efficiency is its heat output. The higher the heat output of the boiler, the more energy it will be using when it’s switched on. In most cases, larger homes with more radiators (散热器) and more bathrooms will need a larger heat output than smaller ones. Learn everything you need to know about picking the right size boiler for your home in our free guide on how to buy the best boiler.
The guide mentioned in the last two paragraphs is mainly about how to________.
选项 A、test a new boiler                                                
B、buy a used boiler
C、select a best boiler
D、repair a leaking boiler
答案C
解析 信息明示题。由题干中的guide、last two paragraphs定位到最后两段的最后一句。最后一段的末句建议读者可以在关于如何买到最佳锅炉的免费指南中了解更多选择大小合适的锅炉方面的信息。由此可知，guide的内容为如何选购最佳锅炉，故C)“选择最佳锅炉”为本题的答案。原文中未提及A)“测试新锅炉”、B)“选购二手锅炉”和D)“维修漏水锅炉”，因此均可以排除。
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