Dear,is it possible one user create
An article, and the aticle be published
Just if other user has approved it ?

Hi Cayazigi
Not quite sure if you want to know if somebody can write an article and publish it or if the article needs to first be approved by another person before it is published. But in both cases joomla can do it using the built in ACL and user groups.
Have a look at these video tutorials - they are very good and I hope you find them useful.
www.ostraining.com/courses/class/joomla-25/access-control/view/
Regards