单项选择题

A．All the passengers were killed.
B．The plane crashed in the night.
C．No more survivors have been found.
D．It’’s too late to search for survivors.
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单项选择题
A．Excellent quality.B．Large productivity.C．Good flavor.D．Both A and B.
A．Excellent quality.
B．Large productivity.
C．Good flavor.
D．Both A and B.
单项选择题
It can be concluded from the passage that________.
A．it is still impossible to detect computer crimes today
B．computer crimes are the most serious problem 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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