问题

依次填入下列各横线处的成语，最恰当的一组是( )①消防工作必须立足于，从提高公众的防火意识做起。②即使现有的产品畅销,也要，抓紧技术储备与新产品开发。③如果我们不从小事做起, ，那些细小的苗头最终可能酿成大祸。

A: 防患未然防微杜渐未雨绸缪
B: 防患未然未雨绸缪防微杜渐
C: 未雨绸缪防微杜渐防患未然
D: 未雨绸缪防患未然防微杜渐

正确答案是：

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