题目内容

What does the author observe in the supermarket?

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There is a misconception among consumers that, if they want to pick out tile best products, they should _______.

简述总体设计与详细设计的区别。

注意的两个基本特性是指向性和________。

目标冲突主要有________、双避冲突、________和多重趋避冲突。

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