This museum is one of the oldest institutions in the United States dedicated to______ the nation’s railroad history.

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问题 This museum is one of the oldest institutions in the United States dedicated to______ the nation’s railroad history.

选项 A、preserve
B、preservative
C、preserving
D、preserved

答案C

解析 空格前的dedicated to意为“奉献给……,献身于……”,这里的to是介词,而不是不定词,空格处要填动名词preserving,而不能填动词原形。顺便学习一些to后面接动名词的表达方式,如be committed/decided/devoted to V-ing,look forward to V-ing,object to V-ing,be opposed to V-ing,be used to V-ing,be accustomed to V-ing。
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