An increasing number of products made in China are good quality but much less expensive than those from abroad.
A. on
B. in
C. for
D. of
网友回答
A. on
B. in
C. for
(答案→)D. of
解析：考查固定用法。固定结构：of+名词=该名词组成的形容词。如of
importance=important重要的。本题的of good quality表示质量好。故D正确。