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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

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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 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 option that conventional computers and softwares 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.
How to paraphrase the word "pioneers"(Line 1, Para. 1)?
选项 A、Persons who are among the first to go into an area or country to settle or work there.
B、Persons who go into previously unknown regions to explore.
C、Persons who are the first to study a new area of knowledge.
D、Any one of a group of soldiers who go into an area in advance of an army to clear paths.
答案C
解析 本题是词义题。A意思是“拓荒者、开发者”，不合题意。B意思是“探险者”，也不合题意。D意为“军队中的工兵”。“pioneer”一词在这里是指在20世纪50年代，首先涉足人工智能(AI)开发研究的计算机专家。
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