A Complete using a, an or the. If an article is not necessary, put a dash (-). Artificial intelligence
In (1) 1960s and 1970s, (2) scientists were confident that computers would be able to think very soon. They thought that it was (3) simple problem: just make computers that could think like the human brain. It seemed easy to make computers that could lay (4) chess, so why not ones that could think about other things? In fact, it wasn't so easy. People carry (5) information about the world and how it works. We know that (6) apple can't speak, for example, or that (7) Moon is a long way away. Although (8) powerful computer can understand (9) simple situation, it's very difficult to program it to understand (10) real world. It will be a long time before we have computers that are truly intelligent
