单项选择题

A．By talking to an expert.
B．By reading an article.
C．By attending an exercise class.
D．By listening to the radio.
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单项选择题
A．He uses a newer machine.B．His job is now done by a machine.C．He went on strike.D．His job was given to another worker.
A．He uses a newer machine.
B．His job is now done by a machine.
C．He went on strike.
D．His job was given to another worker.
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