单选题 Because the region was served by a railroad line, with station stops from three to five miles ______, there was a natural limit to the spread of any particular community.
  • A. distance
  • B. away
  • C. after
  • D. apart
【正确答案】 D
【答案解析】apart“相隔，相距”，此处是副词。句子的意思是“因为这个地区修建了铁路，每隔三五里就有一站，所以形成了社区的自然分布。”其他几个词都不合适。