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 transactions; the difference - 70- in the details
To a consumer, the most visible form of e-commerce consists 71- online ordering
A customer begins with a catalog of possible items, -72- an item, arranges a form of payment, and – 73 - an order
Instead of a physical catalog, e-commerce arranges for catalog to be -74- onthe Internet