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  3. Within fifteen years Britain and other nations should be well on with the bu

Within fifteen years Britain and other nations should be well on with the bu

游客2023-07-22  71
问题     Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recycling of waste.  The word rubbish could lose its meaning because everything which goes into the dumps would be made into something useful. Even the most dangerous and unpleasant wastes would provide energy if nothing else.
    The latest project is to take a city of around half a million residents and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city. This plant would recycle not only metal such as steel, lead and copper, but also paper and rubber as well.
    Another new project is being set up to discover the best ways of sorting and separating the rubbish. When this project is completed, the rubbish will be processed like this: first, it will pass through a powerful fan to separate the lightest elements from the heavy solids; after that grounders and rollers break up everything that can be broken.  Finally, the rubbish will pass under magnets (磁铁), which will remove the bits of iron and steel; the rubber and plastic will then be sorted out in the final stage.
    The first full-scale giant recycling plants are, perhaps, fifteen years away.  Indeed, with the growing cost of transporting rubbish to more distant dumps, some big cities will be forced to build their own recycling plants before long. [br] The passage is mainly about ______.
选项 A、attempts to find efficient ways of recycling wastes
B、efforts to protect the environment in British cities
C、a good way to locate plants for waste recycling
D、a cheap way to get energy from waste materials
答案 A
解析 主旨题。文章各段阐述的都是关于废物处理和再生的问题，故答案为A。
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