I am going to add the news and latest articles manually to my site It will be like this : The heading Description : 3 sentences (most imp 3 sentences copied here) URL to the site So will Google consider my site as a duplicate and hide my site from the results?
Don't think so. Your templates and designs are different and you are not copying the whole content on a single page.
If you point a few quality / authority links to your site it won't be considered as a duplicate for sure.