Left tackle Flozell Adams practiced for first time since the start of training camp. Adams underwent arthroscopic surgery on his left knee two months ago and the Cowboys were being cautious with him. Although he didn't participate in all the drills and was admittedly rusty with his technique, it was a good first day for Adams. The knee held up and he experienced no pain. Pat McQuistan, who had been starting at left tackle in place of Adams, took turns on the right side Monday morning. Clarence E. Hill Jr.