题目内容：

Directions: Read the following passage. Fill in each blank with a proper sentence given in the box. Each sentence can be used only once. Note that there are two more sentences than you need.

When he rolls into a gas station to fill his tank, Barkhad Dahir doesn't get out of his car. He pushes a few buttons on his cellphone and within seconds he has paid for the fuel. With the same quick pushes on his phone he pays for almost everything he needs.

Electronic payments offer consumers convenience, provide profits for banks, credit card companies and payment processors and offer merchants improved cash flow and convenience. "I haven't seen cash for a long time. Almost every merchant even hawker (小贩) on the street accepts payment by cellphone. 1. " says Adan Abokora, a democracy activist.

Purchases are made by dialing a three-digit number, entering a four-digit PIN and then entering the retailer's payment number and the amount of money. Both customers and merchants receive text messages to confirm the payment. 2.For instance, the printing and handling of money is expensive. Cash payments can be anonymous (匿名的) and it is hard to track criminal activities conducted in secret. Many governments favor reducing cash dealings in order to better monitor and understand the activities of their citizens. The Swedish government has been discussing the removing of cash since 2010.

3.Do they choose to rob? Do they sit at home and wait? What happens to people who rely on their cellphones to process money dealings when cell service and the Internet are interrupted? A world affected by terrorism and increasingly violent weather may not yet be ready to abandon currency."

Other people fear that electronic payments may create security risks and enable dealings to be tracked and reported. 4.New technologies which balance and address these factors may enable people to remove cash.

A.There's no waiting for it and no counting of cash.

B.The system is impressively simple and secure.

C.Security is nothing to worry about with the procedures.

D.Clearing up cash payments has several advantages as well.

E.However, some people doubt what members of a cashless society will do when the power goes off.

F.Privacy security and convenience are all important factors in the adoption of electronic payment technology.