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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By 1929, Mickey Mouse was as popular ______ children as Coca-Col
A． forB. inC. toD. with
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When workers are organized in trade unions, employers find it hard to lay them ______.
A．off
B．aside
C．out
D．down
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