One American university uses a robot as a teacher to help students with their problems. And none of the students knew that was a robot at the beginning!
Jill Watson, a robot was made in that university, helps the students a lot. When answering their questions, Jill seems to be an excellent teacher. She can offer（提供）wonderful answers quickly. She sounds natural and usually says good words.
When someone told the students that their "teacher" was a robot, they all got very surprised, because she sounds like a common teacher. "How was it possible? I was talking to a robot? "said Bailey. Another student Jennifer told the newspaper, "We are thinking about choosing Jill Watson to be our best teacher. She is really helpful.
Now many students like to ask questions on their school's website（网站）. It usually takes teachers too much time to answer them. So the university had such an idea of making Jill Watson. It's a faster way to help the students with their problems.
Jill can quickly find possible answers in her own computer to the questions and make sure they are all right. After that, she tells the students in an electronic（电子的）voice that sounds like a famous actress.
