Utilitarian reading: refers to the limited reading time, for special purposes, only choose to read those books and periodicals that are more helpful to improve their academic performance, workability or job search. Which of the following are not utilitarian reading? ['Xiao Li is usually busy with class and home tutoring. Only three days before the qualification exam, she has a mind review exam course.', 'Lao Li is the backbone of the business. Whenever he has time, he will go to the reference room to read the publications related to his job.', 'In order to get good results in the interview, Xiaojiang went to the bookstore and bought several books on interview skills.', 'Although Kobayashi is busy at work, he has always been obsessed with science fiction.']