An old woman walked into a clothes shop.She asked the salesgirl to let herhave a look at a new dress,but the girl was looking out of the window.The oldwoman asked again,raising her voice a bit,but still received no answer.The oldwoman looked carefully at the girl and nodded to herself,“I am too old to seewell now.I can’t even tell a plastic model(塑料模特)from a real girl.”