2. 外语
  3. More and more, the operations of our business, governments, and financial institutions are controlled by information that exist

More and more, the operations of our business, governments, and financial institutions are controlled by information that exist

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问题     More and more, the operations of our business, governments, and financial
institutions are controlled by information that exists only inside computers 1.
memories. Anyone clever enough to modify this information for his own
purposes can reap substantial awards. Even worse, a number of people who 2.______
have done this and caught at it have managed to get away without punishment. 3. ______
    It’s easy for computer crimes to go undetected if no one checks up 4.______
what the computer is doing, but even if the crime is detected, the criminal
may walk away not only unpunished and with a glowing recommendation 5.______
from his former employers. Of course, we have no statistics on crimes that
go undetected. But it’s disturbing to note how many of the crimes we do
know about were detected by accident, not by systematic inspections or
other security procedures. The computer criminals who have been caught
could simply have been the victims of uncommonly bad luck. 6.______
    For example, a certain keypunch operator complained of having to stay
overtime to punch extra cards. Investigation revealed that the extra cards
she was being asked to make were for dishonest transactions. 7.______
    In other case, dissatisfied employees of the thief tipped off the company 8.______
that was being robbed. Unlike other lawbreakers, who must leave the
country, commit suicide, or go to the jail, computer criminals sometimes 9. ______
escape punishment, demanding not only that they not be charged but that
they be given good recommendations and perhaps other benefits. All too
often, their demands have been satisfied. 10. ______  
选项
答案could——may
解析 本题为情态动词误用。此题考查情态动词用法。could have done表示本可以做而未完成的事。此句表示推测，这些落网的罪犯可能只是运气不好而已，应当用may have done.如用might have done则推测语气过弱。
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