请认真阅读下列短文，并根据所读的内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格填写一个单词。请将答案写在答题纸上相应的题号的横线上。
When Joe Bates was twelve years old, he lost interest in school. He stopped listening in his classes. Some of his teachers began to consider him a problem.
But a few of Joe's teachers thought that Joe might have lost interest in schoolwork because he already understood it. They proposed that Joe try taking a university class in computer science. Joe did. He was the best student in the class. Later tests showed that his intelligence and knowledge were far greater than most children of his age. He entered the university when he was thirteen, about four years earlier than most children. And by the time he was in his early twenties, Joe was teaching computer science at a un
