单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now listen to the passage.
Computers are beneficial because they ______.

A．eliminate price errors
B．give itemized printout to the customer
C．save time in the checkout lane and help control inventory
D．all of the above

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单项选择题

单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. Computers are beneficial because they ______. 您的浏览器不支持 audio 元素。