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  3. Supermarket’s New Strategy One supermarket in Tokyo has managed to solve the problems of shoplifting, mistakes by cashiers,

Supermarket’s New Strategy One supermarket in Tokyo has managed to solve the problems of shoplifting, mistakes by cashiers,

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问题                               Supermarket’s New Strategy
     One supermarket in Tokyo has managed to solve the problems of shoplifting, mistakes by cashiers, and long lines of customers waiting at the cash registers. It is Japan’s advanced computer technology that has come  (51)  with the answers.
     Shoppers at an OK supermarket on the outskirts of the city now push a cart  (52)  a plastic card chained to it and buy from glass cases where the goods are on display. The plastic card has a magnetic number imprinted on it. Each customer carries his or her own card, which is  (53)  at the exit. While shopping, the customer pushes the card into a slot beside whichever items are wanted and pushes a button or two. The glass covered vending machines are connected to a computer that  (54)  the price of every item in the store. Prices of every purchase are added up automatically.  (55)  she has finished shopping, the customer hands her card to a cashier who  (56)  it into the register. A second later the  (57)  pops out.
     Shoplifting is physically impossible. Once you touch a commodity the computer remembers it no matter how you hide it or  (58)  you eat it on the spot.
     A cashier at the OK supermarket is now able to work 15 times faster than her  (59)  at a conventional supermarket. Only two cashiers,  (60)  , are required at the store, which  (61)  2,500 separate items. One man is enough to keep the vending machine filled, because whenever the stock for a certain commodity is  (62)  to run out, a red lamp in the computer-room  (63)  him.
     But there are disadvantages too: a customer cannot  (64)  his or her mind about a purchase. Once touched, the item cannot be put back. The customer must  (65)  a cashier with it first and get a refund later. There are also no fresh vegetables or fish on sale—everything is prepackaged.  
选项 A、Before
B、Immediately
C、After all
D、When
答案D
解析 此题属于语法题。根据常识，在超市里顾客当然是购完物以后才到收款处付款，四个选项中只有选项 D when最合适。选项A Before与原文语义不符。选项B Immediately在语法上与原文不符。选项C After all意为“毕竟，终究”，例如：It’s not surprising you’ve got stomachache．After all，you’ve eaten too much．
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