wood free paper 是什么纸呀

wood free paper 是什么纸呀 acid free paper 是种什么纸 wick paper是什么纸 cougar paper 是什么纸 Paper is made wood.空里填什么 The paper is made _from_ wood. Wood can（被用来）making paper、. Wood can（被用来）making paper.. paper use wood for making paper.改为被动语态 THE paper which is made from wood= THe paper made from wood? We can use wood to make paper(保持句意不变）We can( )paper ( )wood. Black & White paper 是什么纸 chrome art paper是什么纸 c1s paper 是什么纸啊 non-glossy paper 是什么纸? The paper is made of wood.一般纸不是看不见原材料吗?为什么用of?还是这是特殊用法? wood 的形容词是什么? wood的名词是什么