九、短文缺词填空，每空一词（共10分，每小题1分）
When robots were invented, they were very large, heavy and even ugly. They were just like machines. They could only do l____86____ work for people. But as time goes by, robot s____87____ are not just trying to make robots look like humans. For example, there are already robots w____88____ in factories. These robots look even m____89____ like huge arms. They do simple jobs over and over again. In fact, they are hard - working but smart machines. People would not like to do such jobs and would get bored e____90____. But robots will never get bored. In the future, there will be more robots everywhere, and humans will have less work to d____91____. New robots will have many different s____92____. Some may look like humans, and o____93____ may look like snakes. After an earthquake, a snake robot could h____94____ look for people under buildings. That may not seem possible now, but computers, space rockets and even electric toothbrushes seemed i____95____ a hundred years ago. We never know what will happen in the future.