单项选择题 A:Hello, David! I havent heard from you for a long time. How have you been recently? B:（）

单项选择题 A free market is an economic system in which the price of goods and services is affected by supply and demand rather than controlled by a government. 这句话翻译成中文是（）

单项选择题 We usually make a direct , shipment unless the customers require transshipment. 这句话翻译成中文是（）