简答题：There are a lot of materials which can be used for making p

题目内容：

There are a lot of materials which can be used for making paper， but the superiority ones are soft wood， cotton and rags.

参考答案：【答案仅供学习，请勿对照自行用药等】

答案解析：

If the lignin is removed from the paper， the paper will be

If the lignin is removed from the paper， the paper will be more expensive.

分类：英语六级题型：简答题

分类：英语六级题型：简答题

分类：英语六级题型：简答题

―1，2，1，9，100，（　　）A．81 B．360 C．10000 D．1 1881

分类：英语六级题型：简答题

The author would probably consider research about the effects noise has on peop

分类：英语六级题型：简答题