A:23条
B:46条
C:24条
D:48条
如图,在△ABC中,AB=BC,以AB为直径的⊙O交AC于点D,过D作直线DE垂直BC于F,且交BA的延长线于点E.
____A. Drink some water.
____B. Have some milk.
____C. I'm six years old.
____D. Act like a tiger.
____E. I'd like some eggs.
如图所示,关于光现象的说法中,正确的是( )