已知是定义在实数集上的增函数，且，函数在上为增函数，在上为减函数，且，则集合=
This is my pencil .That one is ____. A. your B. yours C. you
What did they have ___ lunch ? A. of B. with C. for
He was a driver ______, A. now B. before C. in the future
Please return the books ____ two weeks . A. at B. on C. in
The men wore ____ clothes . A. woman’s B. womens C. women’s
是定义在实数集
上的增函数，且
，函数
在
上为增函数，在
上为减函数，且
，则集合
= 
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