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
正确答案及解析
正确答案
D
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。
Rarely ____ so difficult a problem.（ ）
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。
