单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．R stands for loyalty.
B．It stands for disloyalty.
C．R stands for uprightness.
D．It stands for integrity.
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单项选择题
A．She is running down.B．She is a little tired.C．She is too worried.D．She is rather embarrassed.
A．She is running down.
B．She is a little tired.
C．She is too worried.
D．She is rather embarrassed.
单项选择题
Which of the following can be implied according to the first paragraph
A．Security experts felt very strange about the crackers’ behavior.
B．Hackers often gain unauthorized access to computers.
C．Software is much better now than three years.
D．Credit cards, which are worth I million, have been stolen.
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