A:4个
B:3个
C:2个
D:1个
—It's great. If we follow it, we can finish the task in a short time.
2015•朝阳)如图,在△ABC中,以AB为直径的⊙O交AC于点D,过点D作DE⊥BC于点E,且∠BDE=∠A.
p l p r u e____