Before you the design of this product, you need to study the market carefully．
A. memorise
B. confirm
C. order
D. express
网友回答
A. memorise
(答案→)B. confirm
C. order
D. express
解析：考查词义辨析。Memorise 记住，confirm 证实，order 命令，express 表达，句意：在你证实这个产品的设计之前，你需要认真研究一下市场。所以选B。