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
According to the passage, mathematicians present a danger to scientists because ______.
A．mathematicians may provide theories that are incompatible with those already developed by scientists
B．mathematicians may define situation in a way that is incomprehensible to scientists
C．mathematicians may convince scientists that theoretical assumptions are facts
D．scientists may come to believe that axiomatic statements are untrue
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