单选题 The desegregation was achieved through a number of struggles, ______ have been mentioned in previous chapters.
  • A. a few of which
  • B. a few of them
  • C. a few of those
  • D. a few of that


【正确答案】 A
【答案解析】[考点] 考查非限定性定语从句。
这里考查的是非限定性定语从句，修饰struggles，关系代词which前加了修饰语a few of，因此A为正确答案。