[外语类试卷]大学英语六级模拟试卷363及答案与解析.doc
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1、大学英语六级模拟试卷 363及答案与解析 一、 Part I Writing (30 minutes) 1 Directions: For this part, you are allowed 30 minutes to write a short essay entitled Electronic Waste. You should write at least 150 words following the outlines given below: 1. 废弃的电子产品越来越多; 2. 如何 正确处理这些电子产品。 二、 Part II Reading Comprehension (Sk
2、imming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions attached to the passage. For questions 1-4, mark: Y (for YES) if the statement agrees with the information given in the passage; N (for NO) if the statement co
3、ntradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 1 Artificial Intelligence Im sure that Hans Moravec is at least as sane as I am, but he certainly brought to mind the classic mad scientist as we sat in his fifth-floor office at Carneg
4、ie-Mellon University on a dark and stormy night. It was nearly midnight, and he mixed for each of us a bowl of chocolate milk and Cheerios, with slices of banana piled on top. Then, with banana-slicing knife in hand, Moravec, the senior research scientist at Carnegie Mellons Mobile Robot Laboratory,
5、 outlined for me how he could create a robotic immortality for Everyman, a deathless universe in which life would go on forever. By creating computer copies of our minds and transferring, or downloading, this program into robotic bodies, Moravec explained, humans could survive for centuries. “You ar
6、e in an operating room. A robot brain surgeon is in attendance . Your skull but not your brain is anesthetized (麻醉 ). You are fully conscious. The surgeon opens your braincase and peers inside.“ This is how Moravec described the process in a paper he wrote called “Robots That Rove“. The robotic surg
7、eons attention is directed at a small clump of about one hundred neurons somewhere near the surface. Using high-resolution 3-D nuclear-magnetic-resonance holography, phased-array radio encephalography, and ultrasonic radar, the surgeon determines the three-dimensional structure and chemical makeup o
8、f that neural clump. It writes a program that models the behavior of the clump and starts it running on a small portion of the computer sitting next to you. That computer sitting next to you in the operating room would in effect be your new brain. As each area of your brain was analyzed and simulate
9、d, the accuracy of the simulation would be tested as you pressed a button to shift between the area of the brain just copied and the simulation. When you couldnt tell the difference between the original and the copy, the surgeon would transfer the simulation of your brain into the new, computerized
10、one and repeat the process on the next area of your biological brain. “Though you have not lost consciousness or even your train of thought, your mind-some would say soul-has been removed from the brain and transferred to a machine,“ Moravec said, “In a final step your old body is disconnected. The
11、computer is installed in a shiny new one, in the style, color, and material of your choice.“ As we sat around Moravecs office I asked what would become of the original human body after the downloading. “You just dont bother waking it up again if the copying went successfully.“ he said. “Its so messy
12、. Humans have got so many problems that you might just want to leave it retired. You dont take your Junker car out if youve got a new one.“ Moravecs idea is the ultimate in life insurance. Once one copy of the brains contents has been made, it will be easy to make multiple backup copies, and these c
13、ould be stashed in hiding places around the world, allowing you to embark on any sort of adventure without having to worry about aging or death. As decades pass into centuries you could travel the globe and then the solar system and beyond-always keeping an eye out for the latest in robotic bodies i
14、nto which you could transfer your computer mind. If living forever werent enough, you could live forever several times over by activating some of your backup copies and sending different versions of yourself out to see the world. “You could have parallel experiences and merge the memories later,“ Mo
15、ravec explained. In the weeks and months that followed my stay at Carnegie-Mellon, I was intrigued by how many researchers seemed to believe downloading would come to pass. The only point of disagreement was when-certainly a big consideration to those of us still knocking around in mortal bodies. Al
16、though some of the researchers I spoke with at Carnegie-Mellon, MIT, and Stanford and in Japan thought that downloading was still generations away, there were others who believed achieving robotic immortality was imminent and seemed driven by private passions never to die. The significance of the do
17、or Moravec is trying to open is not lost on others. Olin Shivers, a Carnegie-Mellon graduate student who works closely with Moravec as well as with Allen Newell, one of the founding fathers of artificial intelligence, told me, “Moravec wants to design a creature, and my professor Newell wants to des
18、ign a creature. We are all, in a sense, trying to play God.“ At MIT I was surprised to find Moravecs concept of downloading given consideration by Marvin Minsky, Donner Professor of Science and another father of artificial intelligence. Minsky is trying to learn how the billions of brain cells work
19、together to allow a person to think and remember. If he succeeds, it will be a big step toward figuring out how to join perhaps billions of computer circuits together to allow a computer to receive the entire contents of the human mind. “If a person is like a machine, once you get a wiring diagram o
20、f how he works, you can make copies,“ Minsky told me. Although Minsky doesnt think hell live long enough to download (hes fifty-seven now), he would consider it. “I think it would be a great thing to do.“ he said, “Ive spent a long time learning things, and Id hate to see it all go away.“ Minsky als
21、o said he would have no qualms about waving good-bye to his human body and taking up residence within a robot. “Why not avoid getting sick and things like that?“ he asked. “Its hard to see anything against it. I think people will get fed up with bodies after a while. Then youll have another populati
22、on problem: Youll have all the people of the past, as well as the new ones.“ Another believer is Danny Hillis, one of Minskys Ph. D students and the founding Scientist of Thinking Machines, a Cambridge-based company that is trying to create the kind of computer that might someday receive the content
23、s of a brain. During my research, several computer scientists would point to Hilliss connection machine as an example of a new order of computer architecture, one thats comparable to the human brain. (Hilliss connection machine doesnt have one large central processing unit as other computers do but
24、a network of 64,000 small units-roughly analogous in concept, if not in size, to the brains network of 40 billion neuronal processing units. ) “Ive added up the things 1 want to do in my life, and its about fifteen hundred years worth of stuff,“ Hillis, now twenty-eight, told me one day as we stood
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