题干
He goes to school the early bus.
A：on
B：with
C：at
D：in
答案(点此获取答案解析）
A
He goes to school the early bus.
A：on
B：with
C：at
D：in
)是定义在R上的偶函数,且在区间(-∞,-1)上是增函数,则此函数在