主要告诉我们人工智能可能会超出人类的控制。故选A。

　　2．Machines with specific purposes are associated with living things partly because they might be able to ________ .

　　A．prevent themselves from being destroyed

　　B．achieve their original goals independently

　　C．do anything successfully with given orders

　　D．beat humans in international chess matches

　　答案：A　推理判断题。由第二段第一句"A machine with a specific purpose has another quality, one ... associate with living things: a wish to preserve its own existence."及该段内容可知，具有特殊用途的机器与生物有联系，部分是因为这种机器可能会防止自己被损害。故答案选A。

　　3．According to some researchers，we can use firewalls to ________ .

　　A．help super intelligent machines work better

　　B．be secure against evil human beings

　　C．keep machines from being harmed

　　D．avoid robots' affecting the world

　　答案：D　细节理解题。由第三段中的"Some researchers argue that we can seal ... never allowing them to affect the real world."可知，一些研究者认为，我们可以把这些机器封闭在一种防火墙内，用它们来解决难题，但从不允许它们影响真实世界，故选D项"避免机器人影响世界"。

　　4．What does the author think of the safety problem of super intelligent machines?

　　A．It will disappear with the development of AI.

　　B．It will get worse with human interference.

　　C．It will be solved but with difficulty.

　　D．It will stay for a decade.

　　答案：C　推理判断题。由最后一段首句"Solving the safety problem well enough to move forward in AI seems to be possible but not easy."可知，作者认为，解决超级智能机器的安全问题是可能的，但并非易事。故选C。

　　B

　　Modern technology has a strong influence on many things we do. In fact, technology is shaping almost every part of our day­to­day existence, including education. Ashok Goel is a professor at the Georgia Institute of Technology. Every term over 300 graduate students take his class on artificial intelligence (AI). The students never meet in person. All of the classes take place online-through a website.

Having hundreds of students in a class means Ashok Goel has to answer thousands of questions. He has eight teaching assistants to help him. But even that is not enough to give all the students the help they need. So, in January, he decided to try an experiment. At the start of the spring 2016 semester, he added a new member to his teaching team: Jill Watson. She was able to answer questions faster than most other teaching assistants. And she was available 24 hours a day. It was only at the end of the semester that Goel's students learned Watson's secret: she was not a real person. Jill Watson is an AI computer program. Goel says only two students came close to