简答题：Although free of lignin， paper made from cotton and rag was

题目分类：英语六级
题目类型：简答题
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题目内容：

Although free of lignin， paper made from cotton and rag waste can also cost more money than wood pulp paper because there is much less cotton and rag than trees.

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答案解析：

During the whole manufacturing process， the final product i

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