单选题：What can be done to reduce the cost on trash haunng?

题目分类：英语四级
题目类型：单选题
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题目内容：

What can be done to reduce the cost on trash haunng? A．Composting more food waste.
B．Cutting back food consumption.
C．Monitoring trash with software systems.
D．Storing food in fridges for a shorter lime.

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