单项选择题
A. Walt Whitman B. Ezra Pound C. Philip Freneau D. Robert Frost
A. Banks. B. Securities exchanges industry. C. Aviation industry. D. Hospitals.
A. To show how a smuggler is caught. B. To show a smuggler is afraid of the police. C. To show to keep a wary eye on couriers is useless. D. To show mules may keep the profit for themselves.