David, a man in his forties, who has sacrificed his life to his wife and kids fights to keep them close to him.。在《贝乐虎识字》中，贝乐虎化身成为老师，为小朋友们讲解常用汉字。从汉字的演变、读音、组词、造句，以及常用成语和诗句的角度，全方位解析汉字。。