费费逻辑中的107题

lyolouhang

107Because of the recent transformation of the market, Quore, Inc., must increase the next two years, or it will certainly go bankrupt. In fact, however, Quore’s production structure is such that if a 10 percent productivity increase is possible, then a 20 percent increase is attainable.

 

If the statements above are true, which one of the following must on the basis of them also be true?

 

A.        It is only Quore’s production structure that makes it possible for Quore to survive the transformation of the market.

B.        Quore will not go bankrupt if it achieves a productivity increase of 20 percent over the next two years.

C.        If the market had not been transformed, Quore would have required no productivity increase in order to avoid bankruptcy.

D.       Because of the transformation of the market, Quore will achieve a productivity increase of 10 percent over the next two years.

E.        If a 20 percent productivity increase is unattainable for Quore, then it must go bankrupt.

答案是E，觉得很奇怪，请教各位nn

qxlsh

题干不全，应该如下：

107. Because of the recent transformation of the market. Quore, Inc., must increase productivity 10 percent over the course of the next two years, or it will certainly go bankrupt. In fact, however, Quore’s production structure is such that if a 10 percent productivity increase is possible, then a 20 percent increase is attainable.

lyolouhang

谢谢，了改

LOUI1121

10 percent productivity increase is possible(A), then a 20 percent increase is attainable(B).

A -> B, 所以,负B -> 负A. 换成人话就是, 如果20 percent increase is UNattainable, 那么10 percent productivity increase is IMpossible, 所以这个厂子就要破产啦.

qianrene

楼上推理不对把，10%只是充分条件，只有必要条件的逆否命题才能成立的

充分条件：A成立，X就成立，也有可能有其他诸如BC之类的条件也可以使X成立（A不成立也行）

必要条件：必须要A成立，X才成立，其他诸如BC之类的条件不能使X成立

逆否命题：X不成立，A一定没成立

所以E选项也有问题吧，应该把20%改成10%?或者把文中的条件10%改成20%？

如果是20%没能够获得，不代表10%不能获得啊，10%到20%是递进关系，10%满足了，20%不满足是很正常的呀

[此贴子已经被作者于2007-9-19 15:51:55编辑过]

shenphon

107. Because of the recent transformation of the market. Quore, Inc., must increase productivity 10 percent over the course of the next two years, or it will certainly go bankrupt. In fact, however, Quore’s production structure is such that if a 10 percent productivity increase is possible, then a 20 percent increase is attainable

5樓的想法，我一開始也有，也認為E有問題，但我再做題做到feifei132後，再回頭想這題就有新想法。

我認為 E選項就是逆否命題。A(市場轉變)→B(一定要增加10%生產力)(否B-會破產)→C(增加20%生產力必然可達成)

E選

E.        If a 20 percent productivity increase is unattainable for Quore, then it must go bankrupt.

不就是 否C→否B 

就是正確選項阿！

我一開始也沒想到把會破產當做否B，才會產生

「所以E选项也有问题吧，应该把20%改成10%?或者把文中的条件10%改成20%？」這個問題

russellguo

想不通，我觉得B是对的。连续增长2年10%不会破产，那连续增长2年20%就更不会破产啦

E选项20%的增长没达到，那可能达到15%的增张啊，也还是不会破产呀。。。。。。

哎呀，怎么也想不通哦。这不是比那些复杂的甲推已，逆乙推逆甲更直白的道理么？？？