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

问题补充：

Books are made paper and paper is made wood and bamboo

A. from, from B. of, of C. of, from

答案：

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