标题: 我坚信答案是错的 [打印本页] 作者: yya 时间: 2010-8-22 21:51 标题: 我坚信答案是错的 一道逻辑的探讨 The U.S. census is not perfect: thousands of Americans probably go uncounted. However, the basic statistical portrait of the nation painted by the census is accurate. Certainly some of the poor go uncounted, particularly the homeless; but some of the rich go uncounted as well, because they are often abroad or traveling between one residence and another. Which of the following is an assumption on which the argument above depends? (A) Both the rich and the poor have personal and economic reasons to avoid being counted by the census. (B) All Americans may reasonably be classified as either poor or rich. (C) The percentage of poor Americans uncounted by the census is close to the percentage of rich Americans uncounted. (D) The number of homeless Americans is approximately equal to the number of rich Americans. (E) The primary purpose of the census is to analyze the economic status of the American population. 答案是C，但是我觉得A虽然不好总比C强，请N人指教作者: alpaca 时间: 2010-8-22 22:40
唔……不是牛 我觉得结论是however后面的部分吧。将C取非就会削弱结论了……所以选C..作者: 2008115061 时间: 2010-8-23 00:38
LZ...话直接点说不要介意哦：你去关注那些人想不想被计入审查干什么？文章说穷人很多没被算进去，但富人也有没被算进去，结论就是彼此平衡，明显的逻辑假设就是两部分数量均等作者: 淡云清风 时间: 2010-8-23 01:30
应该还是C更合理。