----Do you believe that paper is made_____wood?----Yes,I do.And you can see that books are made____paper.A.from;fromB.from;ofC.of;fromD.of;of
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B解析考查介词的用法。be made of“由……制成 (物理变化)”，be made from，“由……制作（发生化学变化，制成以后看不见原材料）”。因此第一空使用be made from；第二空使用be made of。