题目内容
From a practical ___________, how can you reduce production costs and at the same time minimize the risks involved?
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Child mortality (死亡率) decreased due to improvements in medical care and greater attention to problems related to proper ___________.
The disaster is already set to be the world's worst for ground casualties ___________ by a crashing aircraft.
With Spring Festival drawing nearer, people are glowing with happiness, and are full of hope; this excitement is ___________ before New Year's Eve.
Don't be too ___________! If the manager of the car dealership intended to give you the job, he would have called you by now.
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