Question

—Paper ___________ wood. We should not waste paper.
—I agree. I always use __________ sides of paper.

A．is made of; either	B．is made from; both
C．makes of; both	D．makes from; either

Answer 1

B

解析试题分析：句意：纸是由木头做的。我们不应该浪费纸。我同意。我总是两面都用。be made of 是可以看出原材料的, be made from是不可以看出原材料的,这两个短语的意思都是由……组成。纸是看不出由木头做的，故用be made from。both两者都+名词复数，either两者中的任何一个+名词单数。故选B.
考点：考查近义词组辨析。