单选题 With the pace of change quickening, more and more scientists find it hard to keep up with the latest developments even in their own ______.
  • A. disciplines
  • B. institutes
  • C. perspective
  • D. horizon
【正确答案】 A
【答案解析】discipline“学科”。B项institutes“学院，学会”：C项perspective“观点，看法”；D项horizon“地平线”。