The passage gives a general description of the structure and use of a landfill.

游客2023-07-14  21

问题 The passage gives a general description of the structure and use of a landfill. [br] To dispose of a ton of trash in a landfill, customers have to pay a tipping fee of ______.

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答案 $10 to $40

解析 文章倒数第五段第三句话明确说明,费用是每吨10美元至40美元不等,由此可知此处该填$10 to $40。
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