填空题. Given the advantages of electronic money, you might think that we would move quickly to the cashless society in which all payments are made electronically. A true cashless society, 11 , is probably not around the corner. For example, Business Week predicted in 1975 that electronic means of payment "would soon revolutionize the very concept of money itself," only to 12 itself several years later. Why has the movement to a(n) 13 society been so slow in coming? Although e-money might be more convenient and may be more efficient than a payment system based on paper, several factors work 14 the disappearance of the paper system. First, it is very expensive to set up the computer, card reader, and telecommunications networks necessary to make electronic money the 15 form of payment. Second, paper checks have the advantage that they 16 receipts, something that many consumers are unwilling to give up. Third, the use of paper checks gives consumers several days of "float" —it takes several days before a check is cashed and funds are 17 from the issuer's account, which means that the writer of the check can earn interest on the funds in the meantime. They eliminate the float for the consumer 18 electronic payments are immediate. Fourth, electronic means of payment raise security and privacy concerns. We often hear media reports that an unauthorized hacker has been able to access a computer database. Although a whole new field of computer science has developed to 19 with security issues, a further concern is that the use of electronic means of payment leaves an electronic 20 that contains a large amount of personal data on buying habits. There are worries that government, employers, and marketers might be able to access these data, thereby eating into our privacy. A．because B．trail C．however D．cope E．original F．reverse G．resume H．1ane I．cashless J．withdrawn K．provide L．collect M．dominant N．against O．path