Question

【题目】The writing brushes __________ bamboo and animals' hair.

A. are made of B. is made from

C. is made of D. are made up

Answer 1

【答案】A

【解析】句意:毛笔是由竹子和动物的毛发制成的。be made of由……制成,从产品可以看出原材料；但be made from看不出；be made up of由……组成；且brushes为复数,故选A。