题目

 Whose T-shirt is this?  It_____ be John's. It's much too small for him.”     A.  might          B.  can't      C. needn't 答案：B如图，在?ABCD中，E是BC的中点，且∠AEC=∠DCE，则下列结论不正确的是（ ）A．S△AFD=2S△EFBB．BF=DFC．四边形AECD是等腰梯形D．∠AEB=∠ADC