Within just six weeks of the safety program's__________ , on-the-job acciden...

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问题 Within just six weeks of the safety program's__________ , on-the-job accidents had dropped by almost 30%.

选项 A.launch
B.staff
C.limitation
D.touch

答案A

解析意为“投入”为正确答案。“launch”作为表示“开始，面市”的动词也经常出现在考试中。

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