Social Sciences. In short, a two-mode is a hybrid vehicle that can operate in two distinct ways (modes). The first mode works much like a regular full hybrid. It is the second mode that makes the difference--where the hybrid system can adjust varying amounts of engine and motor function to meet very specific vehicle/task/traffic requirements.
Twain's first book, The Innocents Abroad, was published in 1869, The Adventures of Tom Sawyer in 1876, and The Adventures of Huckleberry Finn in 1885. He wrote 28 books and numerous short stories, letters and sketches. Mark Twain passed away on April 21, 1910, but has a following still today.
Where did the name Mark Twain come from? When he started writing, Samuel took on the pen name Mark Twain. The name comes from a term used on steamboats to signal that the water was 12 feet deep. Mark Twain wrote a number of books. Some told funny stories from his own travels such as Roughing It and Innocents Abroad.