题目

听下面一段较长的对话,回答两个问题。 (1) What will Laura do today? A . Having a meeting. B . Organize a party. C . Prepare the advice for the friends. (2) When will the speakers have the meeting? A . Today B . This evening. C . Tomorrow. 答案:B C如图,在四边形ABCD中,∠D=90°,AB=13,BC=12,CD=4,AD=3.求:(1)AC的长度;(2)判断△ACB是什么三角形?并说明理由?(3)四边形ABCD的面积.
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