predicting Watson's true identity. He was worried about telling his students because he thought they would not like being part of the experiment. But once they learned Watson's identity, they became very excited.

　　 "Then, you know what happened? They not only asked that question about Jill，""Is she an AI? Once the identity of Jill was revealed, they also asked if I was an AI，" he said.

　　Goel now uses Watson in two classes, but still doesn't tell his students which of his teaching assistants is a computer program. He hopes this technology will make it easier for teachers to create their programs to use in and outside the classroom.

　　篇章导读：本文是一篇记叙文。全文主要讲述了一个教授在学生问问题太多、忙不过来的时候选择使用人工智能计算机程序来辅助教学的这样一件事，告诉读者科学技术能够使教育变得更容易。

　　5．How does Goel give his students help?

　　A．Through books.

　　B．By writing to them.

　　C．By face­to­face teaching.

　　D．Through the Internet.

　　答案：D　细节理解题。根据文章第二段中的"At the start of the spring 2016 semester, he added a new member to his teaching team: Jill Watson. ..."以及后面的"Jill Watson is an AI computer program."可知，Goel利用人工智能计算机程序，给学生提供帮助，为他们解答难题。故选D。

　　6．Why did Goel decide to try an experiment?

　　A．Because some questions were difficult for assitants to answer.

　　B．Because it was hard to answer so many students' questions.

　　C．Because he was too tired to answer those questions.

　　D．Because he wanted to improve students' self­study ability.

　　答案：B　细节理解题。根据文章第二段中的前四句可知，因为有几百名学生问问题，即使有8名助教来帮忙，也很难应对。由此，他决定做一个实验，使用人工智能计算机程序。故选B。

　　7．What's the students' response to Jill Watson?

　　A．Being surprised. B．Being indifferent.

　　C．Being excited. D．Being shocked.

　　答案：C　细节理解题。根据文章第二段最后一句"But once they learned Watson's identity, they became very excited."可知，当他们得知了Watson的真实身份，学生们变得兴奋不已。故选C。

　　8．What's the best title of this passage?

　　 A．Technology Making Education Easier

　　 B．Ashok Goel, a Professor Shaping Education

C．Jill Watson, a Real Teaching Assistant