【单选题】Country I and country II has the same technology. To produce 1 unit of cloth needs 1 unit of capital and 3 units of labor while to produce 1 unit of food needs 3 units of capital and 1 units of labor....
【单选题】A 54-year-old man with a chronic mental illness seems to be con stantly chewing. He does not wear dentures. His tongue darts in and out of his mouth, and he occasionally smacks his lips. He also grima...