题目

五．改错 Bob told me that he would like to be lawyer when he was at school. He had worked very hard at his lessons and tried to enter into a famous university, but something unhappily happened to his family, that made it necessary for him work for a living. As a young man, he had been a bus-driver, a dust-man or a salesman. But he spent his spare times studying and finally become a college teacher. “Young people,” he often said, “full of wishes and hopes after they step into society.” 已知一次函数y＝kx＋b的图象经过第一、二、四象限，则反比例函数y＝的图象经过 [　　] A． 第一、二象限 B． 第三、四象限 C． 第一、三象限 D． 第二、四象限