A-A+
All of the following are advantages of expert
问题详情
All of the following are advantages of expert programs EXCEPT that
[A] they have an indefinite life span.
[B] they cost little to reproduce.
[C] many copies can be made available.
[D] they are self-analytical.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
【设题处】列举处设题，考查专门用途的程序的优点。【解析】选[D]。根据题干中的expertprograms定位于文章第三段后半部分。根据第五句“这些专门用的程序可以不断改善，无限制地存在下去”可排除[A]；根据第六句“而且，它们可以被廉价复制”可排除[B]；根据最后一句提到的“…而且这种程序可以无限制地被复制”可排除[C]。文章中并未提及它们可以自动分析，故答案为[D]。
