题目内容：
如图，△ABC内接于⊙O，AB为⊙O的直径，D为⊙O上一点（位于AB下方），CD交AB于点E，若∠BDC＝45°，BC＝6√2
，CE＝2DE，则CE的长为（）
A.2√6
B.4√2
C.3√5
D.4√3
参考答案：
选择题：如图，△ABC内接于⊙O，AB为⊙O的直径，D为⊙O上一点（位于AB下方），CD交AB于点E，若∠BDC＝45°，BC＝6√2，CE＝2DE，则CE的长为（）
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