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(2007•宜昌)如图,四边形ABCD是矩形,F是AD上一点,E是CB延长线上一...
(2007•宜昌)如图,四边形ABCD是矩形,F是AD上一点,E是CB延长线上一点,且四边形AECF是等腰梯形.下列结论中不一定正确的是( )
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A.AE=FC
B.AD=BC
C.∠AEB=∠CFD
D.BE=AF
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