A:say
B:talk
C:speak
–I still want to drink something. May I have _____ cup of juice?
--Certainly. Here you are.
如图,在△ABC中,∠C=90°,AC=4,BC=3,将△ABC绕点A逆时针旋转,使点C落在线段AB上的点E处,点B落在点D处,则B、D两点间的距离为( )