What are the three different means by which culture is maintaine

What are the three different means by which culture is maintained?
【正确答案】：Culture is maintained by three different means. The first is cultural artifact, which includes concrete objects such as food, dress, building, and means of transportation, to name but a few. The second means includes various forms of documents and literature, such as legal documents, historical documents, and literary works. The third means is verbal communication, including folklores, local operas, language games, and so on.