单选题
[阅读理解]One of the most common types of nonfiction， and one that many people enjoy reading， is stories about people‘s lives. These stories fall into three general categories autobiography， memoir， and biography.
This passage is mostly about _______.
A、the characteristics of autobiographies， memoirs， and biographies
B、famous autobiographies
C、why biography can be difficult to write
D、differences between autobiographies and memoirs
正确答案：A
答案解析：答案选A。本题问的是：这篇文章主要是关于？本段第一句说到最普遍的非小说类文学作品类型之一就是一些来描述人们生活的故事，这些故事大致分为三类：自传回忆录和传记。然后通篇对这三种类型进行了介绍，因此A是正确答案。