1.Because of steep increases in the average price per box of cereal over the last 10 years,overall sales of cereal have recently begun to drop.In an attempt to improve sales,one major cereal manufacturer reduced the wholesale prices of its cereal by 20 percent.Since most other cereal manufacturers have announced that they will follow suit,it is likely that the level of overall sales of cereal will rise significantly. Which of the following would it be most useful to establish in evaluating the argument? A Whether the high marketing expenses of highly competitive cereal market led to the increase in cereal prices B Whether cereal manufactures use marketing techniques that encourage brand loyalty among consumers C Whether the variey of cereals available on the market has significantly increased over the last 10 years D Whether the prices that supermarkets charge for these cereals will reflect the lower prices the supermarkets will be paying the manufactures E Whether the sales of certain types of cereal have declined disproportionately over the last 10 years 题目问的是销量，答案好多都是费用，E我知道是certain和overall不一致 正确选项D是什么意思，是说超市可能要价和付款不一致么？
2.The general availability of high-quality electronic scanners and color printers for computers has made the conterfeiting of checks much easier.In order to deter such counterfeiting,several banks plan to issue to thier 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—— 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 不是说不能duplicated么，E是什么意思 C the smallest dots on the proposed checks cannot be distingushed visually except under strong magnification 不是说明必须用scanner扫么，怎么不对
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发表于 2012-4-7 12:26:40
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