一Excuse me, but where's Mrs. Liu? I want to ask her for some advice. 一She the library. You can find her there.
A:has been to
B:has gone to
C:was in
D:went to
如图是计算函数y=ln(-x),0,2x,x≤-2-2<x≤3x>3的值的程序框图,在①、②、③处分别应填入的是( )