单选题 Our improved customer services have had a significant ______ not only on the sales figures but on customer satisfaction,
  • (A) management
  • (B) impact
  • (C) expression
  • (D) exclusion


【正确答案】 B
【答案解析】分析所有选项的词义很重要，同时记住have an impact on(对……有影响)这个短语就更好了。