快乐是城里的独生子，傲慢任性，怕苦怕累，缺乏爱心，却在杂技方面很有天赋。快乐的班主任赵老师顺势而为，劝说快乐的家长让孩子进了部队杂技团。nbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnb