Question

【题目】Books are made _______ paper while paper is mainly made _______ wood.

A. from; of B. of; from C. of; of D. from; from

Answer 1

【答案】B

【解析】句意：书是用纸做的，而纸主要是用木头做的。be made from指原材料看不见；be made of是指原材料能够看见，故答案为B。