单选题 Rarely ______ so difficult a problem.
  • A. she could have faced with
  • B. could have she faced with
  • C. she could have been faced with
  • D. could she have been faced with
【正确答案】 D
【答案解析】[解析] 本题考察倒装结构。rarely在句首时，其后句子应用倒装结构，即助动词提前，本题中could为助动词。