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From 1978 to 1988, beverage containers accounted for a steadily decreasing percentage of the total weight of household garbage in the United States. The increasingly widespread practice of recycling aluminum and glass was responsible for most of this decline. However, although aluminum recycling was more widely practiced in this period than glass recycling, it was found that the weight of glass bottles in household garbage declined by a greater percentage than the weight of aluminum cans.

Which of the following, if true of the United States in the period 1978 to 1988, most helps to account for the finding?

正确答案: C

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发表于 2009-5-11 10:41:00 | 显示全部楼层

题目问人们既然改用塑料和玻璃的环保容器,为什么玻璃的容器和瓶罐还是一样的减少?

C正好解释了厂商大多用环保塑料而不是用玻璃来替代了瓶罐,所以人们玻璃容器的用量也当然减少了

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