单项选择题 When goods are transported by road，rial，or air，the contract of carriege takes forms of（）or Air Way Bill.

单项选择题 You should use for a napkin only for your（）when dinning out .

单项选择题 If you found a insect in your soup when you are having a business meal，you should（）.

单项选择题 Shipment is an important part in international business.When goods are transported（），Bill of Lading is involved.

单项选择题 Don’t burp.It’s not cute and it’s not a compliment in most parts of the world.What is the meaning of the word "burp"？（）