单项选择题

This passage mainly discusses ______.

A．the history of computers
B．the different functions of computers
C．the computer in the 21st century
D．scientific breakthroughs in the 21st century
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单项选择题
The passage tells us that ______.
A．computers can not yet tell us what symptoms a patient has
B．computers now can remind you to turn off the lights in the basement
C．the author has a car that can think for itself
D．some computers now can already make loud complaints
单项选择题
What does deposit (L.2, Para. 4) probably mean
A．Put in.
B．Take out.
C．Change,
D．Possess.
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