问题
依次填入下列各句横线处的成语，最恰当的一组是（ ）①他是一个心地善良的人，但性格懦弱、谨小慎微，做起事来总是 ，从来不敢越雷也一步。 ②当今世界科技突飞猛进，我们更要勇于开拓，不断进取，如果 ，就会落后甚至被时代潮流所淘汰。 ③想让中国传统戏曲焕发出新的生命力，决不能满足于现状， ，唯有创新才是弘扬戏曲文化的康庄大道。
A:故步自封 墨守成规 抱残守缺
B:墨守成规 故步自封 抱残守缺
C:抱残守缺 故步自封 墨守成规
D:墨守成规 抱残守缺 故步自封
B:墨守成规 故步自封 抱残守缺
C:抱残守缺 故步自封 墨守成规
D:墨守成规 抱残守缺 故步自封
正确答案是：
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