Task2Directions: This task is the same as Task I.The 5 questions or unfinished statements are numbered 41 to 45.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 moden 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 bathroomswill 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.41. According to the passage, people pay more than half of their energy bills for_.A) heating their home B) lighting and cooking C) cooling their housesD) powering electric devices42. If you want the most energy efficient boiler, you should first decide on _.A) the producer of a boiler B) the price of a boiler C) the type of a boiler D) the size of a boiler43. According to Paragraph 3, you can reduce your energy bills by___.A) buying a well-known brand of boiler B) choosing a right type of the boiler C) getting the smallest kind of boiler D) installing the boiler properly44. The heat output of a boiler affects____.A) installation and maintenance B) energy consumption C) operation D) life cycle45. The guide mentioned in the last two paragraphs is mainly about how to _.A)test a new boiler B) buy a used boiler C) select a best boiler D) repair a leaking boiler