题目内容

4. Do you believe that paper is made wood?

—Yes,I do. And you can see that books are made paper.

   A. from;from   B. from; of

   C. of; from   D. of; of

4. B

4. B解析:be made of意为“由……制成”,能看出原材料;be made from意为“由……制成”,看不出原材料。“纸是由木材制成 的”,看不出原材料,故用be made from; “书由纸制成”,能看出原材料,故用be made of.

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