问一个OFFICIAL GUIDE上的CR题目

redhat

10.Meterite explosions in the Earth's atmosphere as large as the one that destroyed forests in Siberia, with approximately the force of a twelve-megaton nuclear blast, occur about once a centry.

The response of highly automated systems controlled by complex computer programs to unexpected circumtances is unpredictable.

Which of the following conclusion can most properly be drawn, if the states above are true, about a highly automated nuclear-missle defense system controlled by a complex computer program?

ANS. It is not certain what the system's response to the explosion of a large meteorite would be, if its designers did not plan for such a contingency.

WHY??[em18]

[此贴子已经被作者于2002-10-21 11:16:26编辑过]

cook

premise: [The response of highly automated systems]controlled by complex computer programs (to unexpected circumtances)is {unpredictabl}.

Anwer: It is {not certain} what the system's [response to the explosion of a large meteorite] would be, (if its designers did not plan for such a contingency)

Compare the (), {}, and [] between premise and answer, you can find the reason.

redhat

Thanks a lot!