题目

为下列句子排序,组成一段完整通顺的对话。()A.Look!It's in the box.()B.Is it under the chair?()C.Where is my cat?()D.Thank you very much.()E.No,it isn't. 答案:【1】4【2】2【3】1【4】5【5】3如图,在Rt△ABC中,∠ACB=90°,AB=10,CD是AB边上的中线,则CD的长是A.20B.10C.5D.
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