【单选题】

The term e-commerce refers to all commercial transactions conducted over the Internet, including transactions by consumers and business-to-business transactions.Conceptually, e-commerce does not (1) from well-known commercial offerings such as banking by phone, "mail order" catalogs, or sending a purchase order to supplier (2) fax.E-commerce follows the same model (3) in other business transactions; the difference (4) in the details.

To a consumer, the most visible form of e-commerce consists (5) online ordering.A、customer begins with a catalog of possible items, (6) an item, arranges a form of payment, and (7) an order. Instead of a physical catalog, e-commerce arranges for catalogs to be (8) on the Internet. Instead of sending an order on paper or by telephone, e-commerce arranges for orders to be sent (9) a computer network. Finally, instead of sending a paper representation of payment such as a check, e-commerce (10) one to send payment information electronically.
In the decade (11) 1993, e-commerce grew from an (12) novelty to a mainstream business influence. In 1993, few (13) had a web page, and (14) a handful allowed one to order products or services online. Ten years (15) , both large and small businesses had web pages, and most (16) users with the opportunity to place an order. (17) , many banks added online access, (18) online banking and bill paying became (19) . More importantly, the value of goods and services (20) over the Internet grew dramatically after 1997.
A、andB、orC、but D、though