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  3. In the 1920s, the pioneers of artificial intelligence (AI) predicted that, by the end of this century, computers would be conver

In the 1920s, the pioneers of artificial intelligence (AI) predicted that, by the end of this century, computers would be conver

admin2012-01-05  44
问题    In the 1920s, 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 are 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 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 AL movement is slowly but surely moving to the forefront of the field.
   Imitating the brain’s neural network is a huge step in the right direction, says computer scientist and biophysicist Michael Conrad, but it still missed an important aspect of natural intelligence. "People tend to treat 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 brains’ 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 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.
Conrad and his group of AI researchers have been making enormous efforts to ______.
选项 A、find a roundabout way to design powerful computers
B、build a computer using a clever network of switches
C、find out how intelligence developed in nature
D、separate the highest and most abstract levels of thought
答案C
解析 第二段谈到，AI researcherstakes a closer look at the more roundabout way in which nature came up with intelligence“转而仔细研究自然是如何造就智能的”，第三段Conrad指出 imitating the brain’s neural network is a huge step in the right direction“模仿大脑的神经系统是往正确方向迈出了一大步”，他们是从自然进化等角度研发人工智能，选项C正确。
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