People in their eighties could choose to listen to different types of novels according to their interests and preferences. Here are some types of books that might be suitable for the elderly: 1. Historical novels: Historical novels usually have profound cultural implications and historical background, which can help the elderly understand historical knowledge and enhance their memory. 2. Prose novels: Prose novels usually focus on nature and life, which can help the elderly relax and improve their quality of life. 3. Poetic novels: Poetic novels usually use lyricism and description as the theme to help the elderly feel the charm of literature and improve their language skills. 4. Humorous novels: Humorous novels are suitable for the elderly to relax and relieve stress. Science fiction: Science fiction novels usually focus on technology and the future. It can help the elderly understand scientific knowledge and enhance their logical thinking ability. Audible books: Audible books can make it easier for people to listen to novels and allow the elderly to freely choose chapters according to their needs. The elderly could choose to listen to different types of novels according to their interests and preferences, making reading a kind of enjoyment.