题目

题型：不详难度：来源：

They began to think about what use could be ________ such materials.
made up         B. made from       
C. made of        D. made out

答案

C

解析

考查短语：make use of 利用，在这里用的被动形式。句意：他们开始考虑利用这种材料干什么。所以选C。