[外语类试卷]大学英语四级(阅读)模拟试卷43及答案与解析.doc
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1、大学英语四级(阅读)模拟试卷 43及答案与解析 Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice. 0 Artificial Intelligence (AI) We often dont no
2、tice it, but artificial intelligence (AI) is all around us. It is present in computer games, in the cruise control in our cars and the servers that route our email. Mischievous robot In June 2002, a robot called Gaak gave an alarming demonstration of its independence. It made a dash for freedom from
3、 an exhibit at the Magna science centre in Rotherham. Gaak crept along a barrier until it found a gap and squeezed through. Having left the building, it reached Magnas exit by the Ml motorway before it was discovered. What is AI? So, can a machine behave like a person? This question underlies artifi
4、cial intelligence (AI), the study of intelligent behavior in machines. In the 1980s, AI research focused on creating machines that could solve problems and reason like humans. One of the most difficult problems in artificial intelligence is that of consciousness. A consciousness gives us feelings an
5、d makes us aware of our own existence. But scientists have found it difficult getting robots to carry out even the simplest of cognitive tasks. Creating a self-aware robot with real feelings is a significant challenge faced by scientists hoping to imitate human intelligence in a machine. Since the e
6、arly 1990s, researchers have concentrated on developing smaller, independent robots instead of trying to recreate human intelligence. The model for many of these machines is insect intelligence, which is in its own way very sophisticated. Supercomputer When it is completed in late 2004, the worlds m
7、ost powerful computer will be ASCI Purple, built by IBM. It is expected to carry out 100 trillion operations per second (or 100 teraflops). A supercomputer with double this processing power is expected within the next two years. It is being built to replace ASCI White formerly the worlds most powerf
8、ul computer which occupies a space the size of two basketball courts at the Lawrence Livermore National Laboratory in Livermore, California. A spokesman for IBM said that ASCI Purple was approaching the processing power of the human brain. But some scientists believe our brains can carry out around
9、10,000 trillion operations per second. HAL, the supercomputer that rebels against its human handlers in the film 2001: A Space Odyssey (1968), is a bold reference to IBM. The letters H, A and L, precede I, B and M in the alphabet. Turing Test In 1950, mathematician Alan Turing devised a test to iden
10、tify whether a machine displayed intelligence. In the Turing Test, two people (A and B) sit in a closed room, while an interrogator (询问者 ) (C) sits outside. Person A tries to fool the interrogator about their gender, while person B tries to assist the interrogator in their identification. Turing sug
11、gested a machine take the place of person A. If the machine consistently fooled the human interrogator, it was likely to be intelligent. Film stars The possible dangers posed by intelligent machines have inspired countless science fiction films. In The Terminator (1984), a computer network attacks t
12、he human race in order to achieve control. This network then manufactures intelligent robots called “Terminators“ which it programs to destroy human survivors. In The Matrix (1999) and The Matrix Reloaded (2003), a machine enslaves humanity, using people as batteries to power its mainframe. Steven S
13、pielbergs AI: Artificial Intelligence (2002) paints a more sympathetic view of artificial life, depicting sensitive robots that are abused by brutal, selfish human masters. Smart games One place where artificial intelligence has found a natural home is in the development of computer games. AI in com
14、puter games is becoming increasingly sophisticated as consumer appetites for better, faster, more challenging games grows. In games, AI is often present in the opponents you play against, or in allies or other team members. From circuit board to chess board In 1997, then world chess champion Garry K
15、asparov played against IBMs Deep Blue supercomputer and lost. After six games, the mighty Kasparov lost 2.5 to 3.5 to the silicon upstart. In February 2003, Kasparov saved some credibility for humanity by drawing against the Israeli-built supercomputer Deep Junior. Kasparov went on to draw 2-2 again
16、st US company X3D Technologies supercomputer X3D Fritz in November 2003, proving that the human brain can keep up with the latest developments in computing (at least in chess). Social skills Despite these entertaining applications, the original point of AI research was to create machines that could
17、understand us. At the Massachusetts Institute of Technology (MIT), scientists have designed a robot called Kismet that can have realistic conversations with people. Kismet is capable of seven different facial expressions and can vary the tone of its voice. It also adjusts its gaze and the direction
18、of its head towards the person it is speaking to. Scientists at HP have designed an electronic DJ. The “hpDJ“ selects beats and baselines from its memory bank and mixes them. Its makers say it could be made to react to the mood of clubbers. At the University of Texas, Dallas, researchers have design
19、ed a lifelike human face capable of 28 facial movements, including smiling, sneering, furrowing its brow and arching its eyebrows. It could be used to put a human face to the artificial brains of the future. Robot future (1) Building bridges A computer program developed at Brandeis University in Mas
20、sachusetts has learnt how to design and build bridges, cranes and tables all by itself. It reinvented support structures such as the cantilever and the triangle without prior knowledge of them. (2) Fraud detecting Credit card companies use a computer program called The Falcon to detect card fraud. T
21、he Falcon works by constantly updating a profile of how customers use their credit cards. It then looks for uncharacteristic patterns of credit card use in the data. (3) Roving eyes (灵动的眼睛 ) A robotic head built by a Scottish robotics company can determine a womans attractiveness. It works by examin
22、ing faces to determine how “feminine“ or “masculine“ they are. It doesnt work in reverse because mens appeal is supposedly not based as much on looks. Perhaps jokingly, researchers say it could be put to use as an artificial receptionist. (4) Consumer gadgets Robots designed for the consumer market
23、and employing very basic forms of AI have become increasingly popular in recent years. Sonys Aibo robot dog behaves like a puppy when it is first activated. But it “learns“ new behavior as it spends more time with its human owner. (5) Airware A software program called FACES could stop mid-air collis
24、ions between planes. When tested in a flight simulator (模拟器 ) the software prevented a pile-up between 35 planes sharing airspace. Brave new world Over the coming century, breakthroughs in nanotechnology, the science of ultra-small machines constructed at the molecular level, may help us build more
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