题目

Shenzhou VI , ______ on Oct, 12, 2005, has greatly inspired the whole nation.    A. launched       B. to be launched      C. being launched     D. launching   答案:A如图,在梯形ABCD中,AD∥BC,AB=CD,对角线AC,BD相交于点E,写出图中二对你认为全等的三角形(不再添加辅助线),并选择其中一对进行证明.
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