SENIOR CITIZENS' MENU   All meals include 1/2 pint of milk. Lunch served at 12 noon. THURSDAY, MAY 8:        Salisbury steak, mashed taters, green beans, apricots, roll THURSDAY, MAY 15:       Goulosh, corn, beets, applesauce, bread THURSDAY, MAY 22:      Chicken pesto, pasta, peas, cauliflower, plums, bread THURSDAY, MAY 29:       Smokehouse spaghetti, italian blend veggies, broccoli, pears, garlic bread