题干
---Oh, Mrs. King, your dress looks nice. Is it new?
---No, I ______it since two years ago.
---No, I ______it since two years ago.
A：had
B：bought
C：have had
D：have bought
答案(点此获取答案解析）
C
，且
，则下列不等式恒成立的是（ ）