题干
—Have you ever been to Fudao? I think it is a good place for you to travel.
— Yes. Many visitors are surprised at the rapid ________ of Fuzhou.
A：development
B：agreement
C：environment
答案(点此获取答案解析）
A
上的函数
满足：
，且
时
，
，则
的值是( ▲ )
