单项选择题

In this factory the machines are not regulated ______ but are jointly controlled by a central computer system;

A．independently
B．individually
C．irrespectively
D．irregularly
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单项选择题
Professor Taylor's talk has indicated that science has a very strong ______ on the everyday life of non-scientists as well as scientists.
A．motivation
B．perspective
C．impression
D．impact
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