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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
admin
2011-04-26
26
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).
A lot of cities are trying new ways to treat garbage mainly because ______.
选项
A、their environment is becoming more and more dirty
B、the traditional ways of treating wastes are not efficient
C、they are short of useful materials
D、they need new materials made from garbage
答案
B
解析
本题为细节推理题。传统的处理方法中,人们只管把垃圾扔出去就了事了。但这种垃圾处理方法已经不合时宜,会造成垃圾成山、浪费资源、污染环境。因此许多城市开始试验用新的方法来处理越来越多的垃圾问题。
转载请注明原文地址:https://kaotiyun.com/show/e0qC777K
本试题收录于:
英语题库成考专升本分类
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英语
成考专升本
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