单项选择题

According to the passage, the initial concern about computer was that they might ______.

A．change our personal lives
B．take control of the world
C．create unforeseen problem
D．affect our businesses
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单项选择题
The passage suggests that the present-day problem with regard to computers is ______.
A．challenging
B．dramatic
C．psychological
D．fundamental
单项选择题
What is the main purpose of this passage
A．To look back to the early days of this passage.
B．To explain what technical problems may occur with computers.
C．To discourage unnecessary investment in computers.
D．To warn against a mentally lazy attitude towards computers.
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