单项选择题

The weekly unemployment data show that ______.

A．more unemployed are being employed now
B．less workers are being dismissed now
C．workers are being better paid now
D．workers are more confident about their income now
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单项选择题
The author discusses computing machines in the first paragraph primarily in order to ______.
A．indicate the dangers inherent in relying to a great extent on machines
B．illustrate his views about the approach of mathematicians to problem solving
C．compare the work of mathematicians with that of computer programmers
D．provide one definition of intelligence
单项选择题
The author suggests that a mathematician asked to solve a problem in an ill-defined situation would first attempt to ______.
A．identify an analogous situation
B．simplify and define the situation
C．vary the underlying assumptions of a description of the situation
D．determine what use would be made of the solution provided
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