— ________ .
A:I can't stand it
B:I like watching it in the evening
C:I watch it every morning
D:I think it's very interesting
全球气温从 ____ 向 ____ 递减.
如图,在△ABC中,∠BAC=90°,AB=AC,AE是经过A点的一条直线,且B,C在AE的两侧,BD⊥AE于D,CE⊥AE于E,CE=2,BD=6,则DE的长为( )