精选优质文档-倾情为你奉上2010年6月份四级完形填空真题及答案The term e-commerce refers to all commercial transactions conducted over the Internet, including transactions conducted over the Internet, including transactions by consumers and business-to-business transactions. Conceptually, e-commerce does not 67 from well-known commercial offerings such as banking by phone, mail order catalogs, or sending a purchase order to a supplier -6 8- fax. Ecommerce follows the same model -69- in other business transactio
