luxury good属于merit good还是demerit good 还是superior good 还是normal good?

luxury good属于merit good还是demerit good 还是superior good 还是normal good? Luxury love feel good hypocrisy merit 快速阅读:Colleges taking another look at value of merit-based aid Good grades a merit-based merit student merit-making luxury是什么意思 luxury是什么意思 LUXURY怎么样 achieved with merit是什么意思 merit什么意思 merit-increment是什么意思 institutional merit意思 merit-principle是什么意思 24.This company provides a very good _______ service for its products.A.maintenance B.merit C.philosophy D.pigeon选A,分别解释一下各个词的意思, luxury shower & bath 求《Lollipop Luxury》歌词