| 江蘇農商行英語專項練習題八（7） |
| 時間:2015-08-29 20:00 來源:江蘇農商行招聘網 作者:admin 點擊:
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A computer is a machine designed to perform work mathematically and to store and select information that has been fed into it. It is run by electronic means. These machines can do a great deal of hard work in a very short time. A large computer, for example, can add nine thousand times a second, or divided five hundred times a second.
The heart of an electronic computer lies in its transistors. It works thousands times faster than the human brain. A problem that might take a human being two years to solve can be solved by a computer in one minute. But in order to work properly, a computer must be given directions---it must have programmed.
Computers can be designed for many specialized aims---they can be used to guide airplane flights, direct cars, even to play chess. Computers play an important part in modern work in many plants and factories throughout the world.
51. A computer is a machine made to ______.
A. perform work mathematically
B. perform hard calculations
C. store and select information
D. all of above
52. The passage calls transistors the electronic computer’s ______.
A. store B. brain C. direction D. heart
53. The use of computers for specialized aims depends on the ______.
A. design of the computer
B. power used to operate the computer
C. ability of the programme
D. ways to operate them
54. Which of the following is true?
A. Computers must be fed every day.
B. A computer only stores information.
C. Computers must be programmed by human beings.
D. A computer can work out a difficult problem within minutes.
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