题目

在我们学校，英语角非常受那些想提高英语口语的学生们的欢迎。 答案：In our school, English corner is popular with the students who want to improve their spoken English.如图，已知在△ABC中，AB=AC，D为BC上一点，BF=CD，BD=CE，那么∠EDF等于 [     ]A.90°-∠A B.C.180°-∠A D.