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【C1】 ______ from well-known commercial offerings such as banking by phone, "mail order" catalogs, or sending a purchase order to a supplier 【C2】 ______ fax. E-commerce follows the same model 【C3】 ______ in other business transactions; the difference 【C4】 ______ in the details.

To a consumer, the most visible form. of e-commerce consists 【C5】 ______ online ordering. A customer begins with a catalog of possible items, 【C6】 ______ an item, arranges a form. of payment, and 【C7】 ______ an order. Instead of a physical catalog, e-commerce arranges for catalogs to be 【C8】 ______ on the Internet. Instead of sending an order on paper or by telephone, e-commerce arranges for orders to be sent 【C9】 ______ a computer network. Finally, instead of sending a paper representation of payment such as a check, e-commerce 【C10】 ______ one to send payment information electronically.

In the decade 【C11】 ______ 1993, e-commerce grew from an 【C12】 ______ novelty (新奇事物) to a mainstream business influence. In 1993, few【C13】 ______ had a web page, and 【C14】 ______ a handful allowed one to order products or services online. Ten years 【C15】 ______ , both large and small businesses had web pages, and most 【C16】 ______ users with the opportunity to place an order. 【C17】 ______ , many banks added online access, 【C18】 ______ online banking and bill paying became 【C19】 ______ . More importantly, the value of goods and services' 【C20】 ______ over the Internet grew dramatically after 1997.

【C1】

A．distract

B．descend

C．differ

D．derive