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  3. Each day every person in the United States throws away more than five pounds of garbage(垃圾). There is more garbage now than ever

Each day every person in the United States throws away more than five pounds of garbage(垃圾). There is more garbage now than ever

admin2011-04-26  42
问题     Each day every person in the United States throws away more than five pounds of garbage(垃圾). There is more garbage now than ever before and most of it is made up of the packages and cans in which we put our food. The traditional way of getting rid of solid wastes is quickly becoming inadequate. Many cities are experimenting with newer ways of handling their growing piles of garbage.
    One of these new ways is "recycling"(回收使用). Through recycling usable materials are taken out of garbage and made into something else. These usable parts of garbage are put through the cycle of going from a raw material to a finished product again.
    In some cities a machine called Hydrapulper is being used to help recycle garbage. A Hydrapulper is like a huge mixing machine. The garbage is dropped onto a conveyor belt (传送带) that feeds the machine. At the same time, water is pumped into the Hydrapulper. With a mixing action, the Hydrapulper throws out the heavy metal objects that can later be sold as waste metal. The rest of the garbage—paper, food, plastic, rubber, glass, wood, leaves, and other items—falls apart. The waste is then mixed with water and carried to another piece of equipment where glass, sand and small pieces of metal are thrown out.
    With the Hydrapulper, up to 95 percent of the original garbage is made again useful. The rest turns into furnace ash(炉灰).
What is done to the waste that is useless when the new way is used?
选项 A、It is thrown away.
B、It is burnt.
C、It turns into some solid objects.
D、It is stored underground.
答案B
解析 本题为细节辨认题。文章最后指出，经过处理后95%的垃圾可回收利用，其余的变成了炉灰。很显然，那些不再有用的垃圾将被焚烧。因此B项是正确答案。
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