Cut pork into thin strips; set aside. Combine orange juice, honey, soy sauce, cornstarch and ginger in small bowl; mix well. Heat 1 tablespoon oil in large skillet over medium-high heat. Add carrots and celery; stir-fry about 3 minutes. Remove vegetables; set aside. Pour remaining 1 tablespoon oil into skillet. Add meat; stir-fry about 3 minutes. Return vegetables to skillet; add sauce mixture and nuts. Cook and stir over medium-high heat until sauce comes to a boil and thickens. Serve over rice.