已知，如图，在△ABC中，OB和OC分别平分∠ABC和∠ACB，过O作DE∥BC，分别交AB，AC于点D，E，若BD+CE=5，则线段DE的长为_刷题宝

题干

已知，如图，在△ABC中，OB和OC分别平分∠ABC和∠ACB，过O作DE∥BC，分别交AB，AC于点D，E，若BD+CE=5，则线段DE的长为（）

A：5

B：6

C：7

D：8

上一题下一题 0.0难度选择题更新时间:2016-09-02 11:47:02

答案(点此获取答案解析）

A

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