Question

This pair of trousers        silk and cotton.

A．is made of	B．are made of
C．is made from	D．are made from

Answer 1

A

解析试题分析：句意：这条裤子是用丝和棉做的。be made of 由……制成（能看出原材料），This pair是单数名词作主语，所以要用is,故选A。
考点：考查固定短语。