2. 职称英语
  3. The more time scientists spend designing computers, the more they wonder at h

The more time scientists spend designing computers, the more they wonder at h

游客2024-01-16  9
问题    The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons.
   Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns.
   Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine.
   Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes. [br] It can be inferred from the first paragraph that a computer______.
选项 A、can recognize a face
B、cannot learn from its mistakes
C、cannot follow detailed instructions
D、can read a handwritten note
答案 B
解析 逻辑推理题。从第一段，Tasks that puzzle the most advanced supercomputer—recognizing a face，reading a handwritten note，可以看出认出人脸和读出手写的便条都是最高级的计算机做不了的事情，所以A和D都是错误的。从Most important，unlike any ordinary computer，the brain can learn from its mistakes可以得知，电脑是不能像人脑一样从自己的错误中总结经验教训的，所以B是正确的。从第二段开头这句，Ordinary computers work by following a chainlike sequence of detailed instructions，可以得知，电脑是可以遵循详细的指令的，所以C是错误的。
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