题干
—I don't want to do as ____sports as Tony does.
—But you have to do if you want to be as _____as he.
A：many ; healthy
B：much; healthily
C：many ; healthily
D：much ; healthy
答案(点此获取答案解析）
A
为
上的可导函数，且
和
恒成立,则有( )
