单选题 Scientists are still measuring the {{U}}impact{{/U}} of automation on the lives of factory workers.
  • A. benefit
  • B. toll
  • C. agony
  • D. effect
【正确答案】 D
【答案解析】impact:影响;benefit:益处,好处,有益于;toll:收费,破坏,死亡;agony:痛苦;effect:效果,影响。