在神经语言程序学（NLP）中，表层结构（Surface Structure）与深层次结构（Deep Structure）之间的关系是？

Choose the correct relative pronoun to complete the sentence: 'The laboratory ______ we conducted the experiment is now closed.'

下列哪种做法最能体现NLP实践中“内容无关”的原则？

关于商品的使用价值和价值，以下说法正确的是？

Identify the correct subjunctive mood: 'It is crucial that the board ______ stricter data redundancy protocols immediately.'