Passage One
Questions 21 to 25 are based on the following passage:
More and more, the operations of our businesses, governments, and financial insitutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purposes can reap substanitial rewards. Even worse, a number of people who have done this and been caught at it have managed to get away without punishment.
It's easy for computer crimes to go undetected if no one checks up on what the computer is doing. But even if the crime is detected, the criminal may walk away not only unpunished but with a glowing recommendation 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, no t by systematic inspections or other security procedures. The computer criminals who have been caught may been the victims of uncommonly bad luck.
For example, a certain keypunch(鍵盤打孔) operator complained of having to stay overtime to punch extra cards. Investigation revealed that the extra cards s he was being asked to punch were for dishonest transactions. In another case, dissatisfied employees of the thief tipped off(向……透露) the company that was being robbed.
Unlike other lawbreakers, who must leave the country, commit suicide, or go to jail, computer criminals sometimes 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 met.
Why? Because company executives are afraid of the bad publicity that would result if the public found out that their computer had been misused. They hesitate at the thought of a criminal boasting in open court of how he juggled(耍弄 ) the most confidential records right under the noses of the company's executives, a ccountants , and security staff. And so another computer criminal departs with just the recommendations he needs to continue his crimes elsewhere.
21. 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 in stitutions
C) computer criminals can escape punishment because they can't be detected
D) people commit computer crimes at the request their company
22. It is implied in the third paragraph that __________.
A) many more computer crimes go undetecte
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