【单选题】A monopolist has a constant marginal cost of $2 per unit and no fixed costs. He faces separate markets in the U.S. and England. He can set one price p1 for the American market and another price p2 for...
【单选题】听力原文:W: When are Ted's parents coming back? M: My sister says both she and Ted's father will stay on for the weekend since Ted is all right here with us. What relation is Ted to the men? (19)