单项选择题A. At the airport. B. At the travel agency. C. In the student center. D. In a restaurant.
单项选择题A. A bill of exchange with a 16-day maturity for $6750. B. A bill of exchange with a 60-day maturity for $6750. C. A bill of exchange with a 90-day maturity for $6750. D. A bill of exchange with a 19-day maturity for $6750.