试题71
　　（ ）has changed the way people buy,sell,hire,and,organize business activities in more ways and more rapidly than any ither technolgy in the history of business.
　　A.EDI
　　B.Web page
　　C.The Internet
　　D.Electronic Funds Transfers
　　试题72
　　I

　　试题71
　　（ ）has changed the way people buy,sell,hire,and,organize business activities in more ways and more rapidly than any ither technolgy in the history of business.
　　A.EDI
　　B.Web page
　　C.The Internet
　　D.Electronic Funds Transfers
　　试题72
　　In the （ ），businesses offer services for which they charge a fee that is based on the number of size of  transactions they process.Some of these services lend thenselves well to operating on the Web.
　　A.Fee-for-Transaction Revenue Model
　　B.Advertising-Suppored Revenue Models
　　C.Web Catalogue Revenue Models
　　D.Value chain
　　试题73
　　The purpose of a network（ ）is to provide a shell around the network which will protect the system connected to the network from various threats .
　　A.firewall
　　B.swithc
　　C.router
　　D.gateway
　　试题74
　　Almost all （ ）have built-in digital cameras capable of taking images and video.
　　A.scanners
　　B.smart phones
　　C.computers
　　D.printers
　　试题75
　　（ ）is a massive volume of structured and unsteuctured data so large it is difficult to process using traditiongal database or software technique.
　　A.Data Processing system
　　B.Big Data
　　C.Data warehouse
　　D.DBMS