单选题 Any troop of wild animals should be approached {{U}}warily{{/U}}.
  • A. fearlessly
  • B. confidently
  • C. silently
  • D. prudently
【正确答案】 D
【答案解析】warily“小心警惕地”；A项fearlessly“勇敢地”；B项confidently“信赖地，安心地”；C项silently“默默地，静静地”；D项prudently“谨慎地，慎重地”。