问题 更新时间2023/4/3 12:59:00 6. What do we learn from the first paragraph about the self-help industry? A) It was established by Norman Vincent Peale. B) It is based on the concept of positive thinking. C) It is a highly profitable industry. D) It has brought positive results. 答案 登录 注册 B 出自:其他 >> 西安石油大学-大学英语2