题目

What a helpful girl she is! ___________. Which sentence can Not be best used to praise the girl highly? A . She always helps others. B . She is continually helping others. C . She is constantly helping others. D . She is always helping others. 答案：A 如图所示，在△ABC中，AB＝AC，∠BAC＝108°，在BC上分别取点D、E，使∠BAD＝∠B，∠CAE＝∠C，则图中的等腰三角形有 [　　] A．3个 B．4个 C．5个 D．6个