单项选择题

The use of computers for specialized purposes depends on the______.

A．design of the computer
B．power used to operate the computer
C．difficulty of the mathematical calculations involved
D．the ability of the programmer
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单项选择题
The passage implies that human beings differ from computers in that human beings
A．make fewer errors
B．do not have to be programmed
C．work more quickly
D．understand their instructions
单项选择题
According to the passage, computers play an essential role in______.
A．automation
B．mathematical computations
C．traffic control
D．the development of mathematical theory
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