In a large nonstick skillet, cook broccoli, pepper, and onions in hot oil over medium-high heat for 4 minutes or until crisp-tender. Transfer from the skillet to a medium bowl.
Add pork to skillet and stir-fry for 2 to 3 minutes or until done. You may need to add a few drops of oil to prevent sticking. Return the vegetables to skillet; add sauce. Stir to coat and heat through. Serve over rice garnished with orange slices.