单项选择题
A. The eastern U.S. B. The Gulf of Mexico. C. The Canadian border. D. Some areas in Cuba.
A. He learns how to live and let live. B. He learns how to organize himself better. C. He learns how to switch over to other channels to avoid advertisements. D. He learns a lot from educational programs.
A. Experience in negotiating. B. A high level of intelligence. C. The time they spend on preparation. D. The amount of pay they receive.