单项选择题

Questions 17 to 20 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. Why are computerized systems acceptable and helpful

A．They can play games with us.
B．They can make money.
C．They can spot patterns of criminal behavior.
D．They can issue credit cards.

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单项选择题

单项选择题

Questions 17 to 20 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. Why are computerized systems acceptable and helpful 您的浏览器不支持 audio 元素。