A common set would be the have an entries loop on the index template for the news section to list the abstracts and have a separate template for display of the full item. Such as:
news/index
{exp:channel:entries channel="ABC" limit="25" orderby="date" sort="desc" disable="member_data|categories" dynamic="no"}
your fields here, such as title, date, abstract
<a href="http://{url_title_path=news/detail/}">More</a>
{/exp:channel:entries}
Then in the news/detail template:
{exp:channel:entries channel="ABC" limit="1" orderby="date" sort="desc" disable="member_data|categories" dynamic="yes"}
your fields here, such as title, date, full body, others
{/exp:channel:entries}
There are many others ways to do this, but this is a pretty common application. Hope this help you.