One hundred and thirteen million Americans have at least one hank-issued credit card. They give their owners automatic credit in

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问题     One hundred and thirteen million Americans have at least one hank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and even abroad, and they make many banking services available as well. (46)More and more of these credit cards can be read automatically, making it possible to withdraw or deposit money in scattered locations, whether or not the local branch bank is open. For many of us the "cashless society" is not on the horizon—it’s already here.
    While computers offer these conveniences to consumers, they have many advantages for sellers too. (47)Electronic cash registers can do much more than simply ring up sales. They can keep a wide range of records, including who sold what, when, and to whom. This information allows business- men to keep track of their list of goods by showing which items are being sold and how fast they are moving. Decisions to reorder or return goods to suppliers can then be made. (48)At the same time these computers record which hours are busiest and which employees are the most efficient, allowing personnel and staffing assignments to be made accordingly. And they also identify preferred customers for promotional campaigns. Computers are relied on by manufacturers for similar reasons.
(49) Computer-analyzed marketing reports can help to decide which products to emphasize now,
which to develop for the future, and which to drop. Computers keep track of goods in stock, of raw materials on hand, and even of the production process itself.

    (50) Numerous other commercial enterprises, from theaters to magazine publishers, from gas and electric utilities to milk processors, bring better and more efficient services to consumers through the use of computers.

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答案电子现金出纳机做的不只是简单地记录销售金额。它们可以做众多的记录,包括谁在何时把什么东西卖给了谁。这一信息使商家可以通过显示销售商品的种类和销售速度,从而跟踪记录它们的商品清单。

解析 第一句中的do much more than的意思是“做的不只是”,说明ring up sales只是electronic cash registers工作的一部分;第二句中的who sold what,when,and to whom是介词including的宾语。第二句中的介词结构by showing...作方式状语,其中showing后面的which items are being sold和how fast they are moving都作showing的宾语。
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