单项选择题

Varied jobs, in writer's opinion, will ______.

A．offer greater productivity
B．drive workers to work harder
C．make workers more productive
D．make worker's life more enjoyable, but do not make them more hardworking

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热门试题

单项选择题

Degree of the worker's contribution is greater when ______.

A．a factory possesses more experts
B．a factory has many small production lines
C．workers enjoy more freedom
D．workers work at a large production line

单项选择题

The longest time a human being can survive without sleep is probably ______.

A．five days
B．seven days
C．ten days
D．twelve days