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  3. Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recy

Within fifteen years Britain and other nations should be well on with the building of huge industrial architectures for the recy

admin2010-09-10  79
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.
According to the passage, the reason for big cities to build their own recycling plants is that ______.
选项 A、they can be of great help to the protection of environment
B、it is more expensive to process wastes in a farther dump
C、they can make the wastes into something that is useful
D、they can produce a lot of energy for the local residents
答案B
解析 细节题。首先用big cities to build their own recycling plants进行定位，根据文章最后一句with the growing cost of transporting rubbish to more distant dumps可知一些大城市需要建设自己的recycling plants是因为把垃圾拉到远处的垃圾场进行处理的成本很高，故答案为B。
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