新prep2-84,搞不懂，拜托帮帮忙，谢谢

84.   (26216-!-item-!-188;#058&001794)

The general availability of high-quality electronic scanners and color printers for computers has made the counterfeiting of checks much easier.  In order to deter such counterfeiting, several banks plan to issue to their corporate customers checks that contain dots too small to be accurately duplicated by any electronic scanner currently available; when such checks are scanned and printed, the dots seem to blend together in such a way that the word “VOID” appears on the check.

A questionable assumption of the plan is that

A. in the territory served by the banks the proportion of counterfeit checks that are made using electronic scanners has remained approximately constant over the past few years

B. most counterfeiters who use electronic scanners counterfeit checks only for relatively large amounts of money

C. the smallest dots on the proposed checks cannot be distinguished visually except under strong magnification

D. most corporations served by these banks will not have to pay more for the new checks than for traditional checks

E. the size of the smallest dots that generally available electronic scanners are able to reproduce accurately will not decrease significantly in the near future

正确答案E

这题勉强做对了，可是回头看看，又不明白E中为什么要说size decrease？

谁帮忙解释下吧。。。谢谢。。

这道题刚刚今天做过。

题干中描述了这种用支票上印很细的小点来进行防伪的方法，因为目前市面上的扫描仪都无法正确读取这些小点而会读成连续的一片。那么这里的假设当然是今后较短的时间内（至少在支票的有效期内）不会出现能够精确扫描这些小点的扫描仪了。这个假设是有问题的因为科技进步太快了嘛。

以下是引用hughlv在2009/8/10 23:54:00的发言：

这道题刚刚今天做过。

题干中描述了这种用支票上印很细的小点来进行防伪的方法，因为目前市面上的扫描仪都无法正确读取这些小点而会读成连续的一片。那么这里的假设当然是今后较短的时间内（至少在支票的有效期内）不会出现能够精确扫描这些小点的扫描仪了。这个假设是有问题的因为科技进步太快了嘛。

谢谢ls的gg，可是我还是不懂为什么说size呢？这个size指什么啊？还有E中说的是decrease啊。。。。。

逻辑方面我真的不开窍，麻烦再指点下~~

这里的size指的是印的小点的尺寸。扫描仪的精度越高的话，它所能认出的纸上的点尺寸可以越小。

E的原意是：一般情况下的扫描仪能够准确复制的点的最小尺寸在近期不会变得更小，即扫描仪的精度不会变得更高的意思。

我虽然也觉得E是对的， 但是还是选了D：

D. most corporations served by these banks will not have to pay more for the new checks than for traditional checks

因为当时我想，如果客户因为成本原因不选择使用新技术，那就算新技术有用也无用武之地啊！ 所以就选D了……

我这种离谱的思维错误根源是什么？是我假设了另一个前提“如果变贵客户就可能不用”吗？

请指教！谢谢

因为当时我想，如果客户因为成本原因不选择使用新技术，那就算新技术有用也无用武之地啊！ 所以就选D了……

我这种离谱的思维错误根源是什么？是我假设了另一个前提“如果变贵客户就可能不用”吗？

请指教！谢谢