单项选择题

Which of these is not a possible factor leading to greater productivity

A．To make jobs more varied.
B．To give the worker freedom to do his job in his own way.
C．Degree of work contribution.
D．Demands for longer working hours.

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单项选择题

In this passage, the author tells us ______.

A．how to make the workers more productive
B．possible factors leading to greater efficiency
C．to a certain extent more money lead to greater productivity
D．how to make workers' jobs more interesting

单项选择题

According to the passage, why do workers want more money

A．Because their jobs are too boring.
B．Because they want to enjoy more spare time.
C．Because they want to make their jobs more interesting.
D．Because they demand shorter working hours.