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【题目】The company established a platform in 2017 ______ collision experiments can be carried out for railway vehicles.

A.whereB.whenC.thatD.which

【答案】A

【解析】

考查定语从句。句意:2017年这个公司成立了一个平台,在这里可以实施铁路车辆的碰撞实验。分析句子结构可知,此处是定语从句关系词,先行词platform在从句中充当地点状语,故用关系副词where,故选A项。

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