题目

Every country has its heroes. The heroes are the people the nation and especially the young people admire or think highly of. If you get a list of the heroes of a nation, it will tell you the potential (潜力) of that nation. Today in America, if you ask the high school students to list their heroes, their choices would probably fall into three groups. The first group of heroes would be the rock stars — the people connected with rock music. There is no doubt that such people do have talent (才能) but one wonders if one should treat rock stars as a model. The rock stars too often ar如图，在△ABC中，D、E分别是AB，BC上的点，若△ACE≌△ADE≌△BDE，则∠ABC=A.30°B.35°C.45°D.60°