In this passage, the author tells us______.
A．how to make the workers more productive
B．impossible factors leading to greater efficiency
C．to what extent more money leads to greater productivity
D．how to make workers' jobs more interesting此题为多项选择题。

A.
A．how
B.impossible
C.to
D.how

【参考答案】

A
综观全文，这是一篇讨论如何使工人更加有效地工作的文章，因此A项为正确。B项明显是错误的。而C和D两项仅是文章......

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