— What will the weather be like tomorrow?
— ____________. ( )
A:It will be cold
B:It's cold
C:It will be rain
(Ⅰ)讨论f(x)的单调性;
(Ⅱ)若f(x)有两个零点,求a的取值范围.
从东西半球和南北半球看,中国位于( )