Question

Books are made _______ paper while paper is mainly made _______ wood.
A. of; of                   B. from; from               C. of; from

Answer 1

C

試題分析：句意：書是由紙制成的，而紙主要是由木頭制成的。Be made of由…制成，從產品中能看得出原料；Be made from由…制成，從產品中不能看出原料。所以選C。