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

解析試題分析：句意：紙是由木頭做的。我們不應該浪費紙。我同意。我總是兩面都用。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,這兩個短語的意思都是由……組成。紙是看不出由木頭做的，故用be made from。both兩者都+名詞復數，either兩者中的任何一個+名詞單數。故選B.
考點：考查近義詞組辨析。