单项选择题

A spear or a robot has the quality of technology only when it ______.

A．is used both as a cultural and a physical object
B．serves different purposes equally well
C．is utilized by man
D．can be of use to both man and animal
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单项选择题
According to the author, the introduction of the computer is a revolution mainly because ______.
A．the computer has revolutionized the workings of the human mind
B．the computer can do the tasks that could only be done by people before
C．it has helped to switch to an information technology
D．it has a great potential impact on society
单项选择题
By using the phrase the human quality of technology ( Para. 2 ), the author refers to the fact that technology ______.
A．has a gent impact on human life
B．has some characteristics of human nature
C．can replace some aspects of the human mind
D．does not exist in the natural world
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