题目内容

We all know how important ___________（secure)is to your environment.

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After a careful examination, the authorities expressed their （approve)______of the plan.

在司炉过程中，遇到什么情况应紧急停炉？

论述小地老虎综合防治策略与方法。

Is there any hope of your（choose)_____as a model worker？