单项选择题


A．exist
B．isolate
C．hold
D．distinguish
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单项选择题
Which of the following is mentioned in the passage
A．A strict law against computer crimes must be enforced.
B．Companies need to impose restriction on confidential information.
C．Companies will guard against computer crimes to protect their reputation.
D．Companies usually hesitate to uncover computer crimes.
单项选择题
It can be concluded from the first paragraph that______.
A．it is still impossible to detect computer crimes today
B．computer crimes are very serious in the operation of financial institutions
C．computer criminals can escape punishment because they can't be detected
D．people commit computer crimes at the request of their company
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