单选题 Professor Clark continued his research work and disregarded his colleague's advice.
  • A. ignored
  • B. explored
  • C. realized
  • D. recognized


【正确答案】 A
【答案解析】[解析] disregard和ignore都表示“视而不见、不顾”；explore：探索、探险；realize：意识到；recognize：识别、承认。