题干
I a camera two weeks ago but I haven't had a chance to use it.
A：have bought
B：bought
C：will buy
答案(点此获取答案解析）
B
I a camera two weeks ago but I haven't had a chance to use it.
A：have bought
B：bought
C：will buy
在区间
内是增函数，则实数
的取值范围是（ ）