单选题 The most (distinctive) change in American (values) of the last twenty years (has been) an increasing emphasis (in) the pursuit of self-fulfillment.
  • A. distinctive
  • B. values
  • C. has been
  • D. in


【正确答案】 D
【答案解析】改为on，emphasize(v．)/emphasis(n．)与介词on是固定搭配的用法。