![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Contents page, chapter headings and index are important for a reader to start his reading with because ______.
A.
they cover major points of the book in detail
B.
they may help reader to better understand the book
C.
they can take readers a lot of time to read every part of the book
D.
they may help the readers find the important parts of the book