单选题
This article shows that ______.
A、
some people are trying to solve their waste problems
B、
the government is not concerned with the problem of wastes
C、
recovered materials won't be able to compete with new materials
D、
citizens will unwillingly pay the costs of changing the waste system
【正确答案】
A
【答案解析】
本题为细节辨析题。文中提到“来自全国各方面的努力表明，若是适当地采取新技术也许能够变废为宝”，可见，A 选项，“一些人们正在努力解决垃圾处理问题”是正确的。
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