题目

（07年海淀区一模理） ，则“”是“”的（    ）    A. 充分非必要条件               B. 必要非充分条件    C. 充分必要条件                 D. 既非充分也非必要条件 答案：答案: B--- Oh, it’s you! I ___________ you. ---- I have just had my hair cut, and I am wearing new glasses. A. didn’t recognize                         B. don’t recognize C. haven’t recognized                    D. hadn’t recognized