Books are made paper and paper is made wood and bambooA. from, from B. of, of C. of, from

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解析：be made of,be made from的意思都是由……组成，be made of 是可以看出原材料的,be made from是不可以看出原材料的,而题中第一空书是由纸做的，可以看出原材料的，故用be made of;第二空纸是由木头和竹子做的，看不出原材料，故用be made from，
故选C