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  3. In the 1950s, the pioneers of artificial intelligence(AI)predicted that, by the end of this century, computers would be conversi

In the 1950s, the pioneers of artificial intelligence(AI)predicted that, by the end of this century, computers would be conversi

admin2015-01-15  30
问题     In the 1950s, the pioneers of artificial intelligence(AI)predicted that, by the end of this century, computers would be conversing with us at work and robots would be performing our housework. But as useful as computers are, they’re nowhere close to achieving anything remotely resembling these early aspirations for humanlike behavior. Never mind something as complex as conversation: the most powerful computers struggle to reliably recognize the shape of an object, the most elementary of tasks for a ten-month-old kid.
    A growing group of AI researchers think they know where the field went wrong. The problem, the scientists say, is that AI has been trying to separate the highest, most abstract levels of thought, like language and mathematics, and to duplicate them with logical, step-by-step programs. A new movement in AI, on the other hand, takes a closer look at the more roundabout way in which nature came up with intelligence. Many of these researchers study evolution and natural adaptation instead of formal logic and conventional computer programs. Rather than digital computers and transistors, some want to work with brain cells and proteins. The results of these early efforts are as promising as they are peculiar, and the new nature-based AI movement is slowly but surely moving to the forefront of the field.
    Imitating the brain’s neural(神经的)network is a huge step in the right direction, says computer scientist and biophysicist Michael Conrad, but it still misses an important aspect of natural intelligence. "People tend to treat the brain as if it were made up of color-coded transistors," he explains. "But it’s not simply a clever network of switches. There are lots of important things going on inside the brain cells themselves. " Specifically, Conrad believes that many of the brain’s capabilities stem from the pattern-recognition proficiency of the individual molecules that make up each brain cell. The best way to build an artificially intelligent device, he claims, would be to build it around the same sort of molecular skills.
    Right now, the notion that conventional computers and software are fundamentally incapable of matching the processes that take place in the brain remains controversial. But if it proves true, then the efforts of Conrad and his fellow AI rebels could turn out to be the only game in town.
The new trend in artificial intelligence research stems from______.
选项 A、the shift of the focus of study on to the recognition of the shapes of objects
B、the belief that human intelligence cannot be duplicated with logical, step-by-step programs
C、the aspirations of scientists to duplicate the intelligence of a ten-month-old child
D、the efforts made by scientists in the study of the similarities between transistors and brain cells
答案B
解析 本题问在人工智能研究中的新方向起源于什么。文章第2段谈到这个问题：“越来越多的AI研究者认为，在AI研究中所犯的错误在于：一直试图努力分开最高最抽象的思维水平，如语言和数学，并想用逻辑的一步一步的程序来复制它。新的研究方向对自然与人工智能之间的迂回曲折的关系予以更多的关注。”故选B项。
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