A. It's in May.
B. At 2:30.
C. Winter.
D. I can swim.
E. I go shopping.
如图是某一时刻从平面镜里看到的一块运行准确的手表的像,由表针的位置可知现在的时刻是( )
We'll watch the birds fly.( )
将二次函数y=x2﹣4x+5化为y=(x﹣h)2+k的形式,那么h+k=____