单项选择题

A computer is a machine designed to ______.

A．perform work mathematically
B．perform complicated calculations
C．store and select information
D．all of the above
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单项选择题
The title that best expresses the ideas of this passage is ______.
A．Philosophy of Mathematics
B．The Recent Growth in Science
C．The Verification of Facts
D．Methods of Scientific Inquiry
单项选择题
The difference between fact' and theory ______.
A．is that the latter needs confirmation
B．rests on the simplicity of the former
C．is the one between old Greeks and modem scientists
D．helps us know deduction
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