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  10
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] Which of the following is NOT true about an ordinary computer?
选项 A、It must be programmed before it works.
B、It can only solve one problem at a time.
C、It is good at solving problems that can be broken down into simpler logical pieces.
D、It is trained to make decisions.
答案 D
解析 从第二段开头这句，Ordinary computers work by following a chainlike sequence of detailed instructions(电脑的工作原理就是遵循一系列详细的指令)，可知选项A是正确的表达。从第二句，Although very fast，their processors can perform only one task at a time，可知B也是正确的表达。从第三句，This approach works best in solving problems that can be broken down into simpler logical pieces(在处理能够破解为更简单的逻辑编码的问题时，效果最好)，可知选项C也是正确的表达。另外第三段第一句Instead of programming a neural-network computer to make decisions，its maker trains it to…中的instead of就已经表明了没有给电脑编程去让它做决定，所以选项D是错误的表达。
转载请注明原文地址:https://tihaiku.com/zcyy/3367998.html
相关试题推荐
随机试题
最新回复(0)