These are lots of books in our daily life. Some are about history, some are novels, and some are even about the dream in the future. I think it's useful to read stories, because it can be used sometimes. Once, there was a very difficult question in an important history exam history, which wasn't mentioned in our history books, even our teacher has never told us about it. But I remembered clearly that I had read it in a history story, so I answered the question without difficulty and...