题目

如图1，在等腰Rt△ABC中，∠BAC=90°，点E在AC上（且不与点A、C重合）．在△ABC的外部作等腰Rt△CED，使∠CED=90°，连接AD，分别以AB，AD为邻边作平行四边形ABFD，连接AF．（1）求证：△AEF是等腰直角三角形；（2）如图2，将△CED绕点C逆时针旋转，当点E在线段BC上时，连接AE，求证：AF=AE；（3）如图3，将△CED绕点C继续逆时针旋转，当平行四边形ABFD为菱形，且△CED在△ABC的下方时，若AB=2，CE=2，求线段AE的长．用括号中所给词的正确形式填空.1．There are some ________(tomato)in the basket. 2．Do you like French ________(fry)? 3．She ________(have)ice cream for dessert. 4．________(health)food is important. 5．She ________(do not)play sports. 6．________ your mother ________(watch)TV every day? 7．The little girl likes ________(strawberry)a lot. 8．Lots of children like ________(play)football. 9．Chicken ________(be)very delicious. 10．My daughter ________(go)to school from Monday to Friday.