月度机经1.1.17 GWD的那道题，请问第一题为什么不选C而选D？

danoulini

Companies that must determine well in advance of the selling season how many units of a new product to manufacture often underproduce products that sell well and have overstocks of others. The increased incidence in recent years of mismatches between production and demand seems ironic, since point-of-sale scanners have improved data on consumers’ buying patterns and since flexible manufacturing has enabled companies to produce, cost-effectively, small quantities of goods. This type of manufacturing has greatly increased the number of new products introduced annually in the United States. However, frequent introductions of new products have two problematic side effects. For one, they reduce the average lifetime of products; more of them are neither at the beginning of their life (when prediction is difficult) or at the end of their life (when keeping inventory is expensive because the products will soon become obsolete). For another, as new products proliferate, demand is divided among a growing number of stock-keeping units (SKU’s). Even though manufacturers and retailers can forecast aggregate demand with some certainty, forecasting accurately how that demand will be distributed among the many SKU’s they sell is difficult.  For example, a company may be able to estimate accurately the aggregate number of shoes it will sell, but it may be uncertain about which specific types of shoes will sell more than other types.
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Q35:
Which of the following most accurately describes the function of the last sentence in the passage (lines 35-40)?
A.    To cite a situation in which the aggregate demand is more important than the distribution of demand among SKU’s
B.    To refute an assertion about the side effects of flexible manufacturing
C.    To illustrate an assertion about companies’ ability to forecast demand
D.    To provide an example of ways in which companies address the difficulties of forecasting demand（D）
E.    To note an exception to the author’s assertion about distributing demand among SKU’s

给的答案是D，请问C为啥不对呀？

另外，有人知道point-of-sale scanners是神马意思吗？

谢谢啦！

zonghualiu

point of sale scanner 是在超市结帐时那个收款机。

C or D 不确定。

sdcar2010

C is the right answer since it provides an example to explain the assertion made in the penultimate sentence:
Even though manufacturers and retailers can forecast aggregate demand with some certainty, forecasting accurately how that demand will be distributed among the many SKU’s they sell is difficult

chunyan1122

我觉得这个句子的重点在BUT分句的内容，D里是和BUT的内容一致，BUT前面的分句和C选项一致。所以偏向于选D

zonghualiu

D 最大问题是意思跟文章不符， （困难不能解决）

moonyee5

个人还是倾向选C，因为C跟例子前面一句更加吻合，不仅提到了aggregated demand,而且也提到了distributed demand，而D的描述有点太片面

dailly900819

觉得选C

tangbin1985

我觉得是D，C里说的assertion论断，文中并没有

sdcar2010

Assertion : Something declared or stated positively, often with no support or attempt at proof.

The penultimate sentence is an assertion/statement/declaration, whose proof/example comes in the last sentence.

danoulini

谢谢各位的解释！

今天早上又把文章和选项看了一遍，现在更倾向于D :-)

1）D说的是provide an example, 和划线句子呼应，而C说illustrate an assertion, 所以觉得D稍好一点

2) C说到ability,感觉ability这个词很重，因为文章中只说到with some certainty，所以倾向选D