XDF的逻辑题~~谢谢大家~~

cherrydew

17. Companies considering new cost-cutting manufacturing processes often compare the projected results of making the investment against the alternative of not making the investment with costs, selling prices, and share of market remaining constant.
Which of the following, assuming that each is a realistic possibility, constitutes the most serious disadvantage for companies of using the method above for evaluating the financial benefit of new manufacturing processes?
(A) The costs of materials required by the new process might not be known with certainty.
(B) In several years interest rates might go down, reducing the interest costs of borrowing money to pay for the investment.
(C) Some cost-cutting processes might require such expensive investments that there would be no net gain for many years, until the investment was paid for by savings in the manufacturing process.
(D) Competitors that do invest in a new process might reduce their selling prices and thus take market share away from companies that do not.
(E) The period of year chosen for averaging out the cost of the investment might be somewhat longer or shorter, thus affecting the result.
答案选D  为什么C不对捏？ 如果按照C说的那题中这种比较的方法就没意义了嘛


Questions 19-20 are based on the following
Archaeologists seeking the location of a legendary siege and destruction of a city are excavating in several possible places, including a middle and a lower layer of a large mound. The bottom of the middle layer contains some pieces of pottery of type 3, known to be from a later period than the time of the destruction of the city, but the lower layer does not.
19. Which of the following hypotheses is best supported by the evidence above?
(A) The lower layer contains the remains of the city where the siege took place.
(B) The legend confuses stories from two different historical periods.
(C) The middle layer does not represent the period of the siege.
(D) The siege lasted for a long time before the city was destroyed.
(E) The pottery of type 3 was imported to the city by traders.
这个题选C  纯属没看懂


14. A recent survey of all auto accident victims in Dole County
found that, of the severely injured drivers and front-seat passengers, 80 percent were not wearing seat belts at the time of their accidents. This indicates that, by wearing seat belts, drivers and front-seat passengers can greatly reduce their risk of being severely injured if they are in an auto accident.
The conclusion above is not properly drawn unless which of the following is true?
(A) Of all the drivers and front-seat passengers in the survey, more than 20 percent were wearing seat belts at the time of their accidents.
(B)Considerably more than 20 percent of drivers and front-seat passengers in Dole County
always wear seat belts when traveling by car.(C) More drivers and front-seat passengers in the survey than rear-seat passengers were very severely injured.
(D) More than half of the drivers and front-seat passengers in the survey were not wearing seat belts at the time of their accidents.
(E) Most of the auto accidents reported to police in Dole County
do not involve any serious injury.
这个A  没绕过来~ 超过20%在事故中系了安全带 那这不是削弱了题的意思吗

最后一个

15. Six months or so after getting a video recorder, many early buyers apparently lost interest in obtaining videos to watch on it. The trade of businesses selling and renting videos is still buoyant, because the number of homes with video recorders is still growing. But clearly, once the market for video recorders is saturated, businesses distributing videos face hard times.
Which of the following, if true, would most seriously weaken the conclusion above?
(A) The market for video recorders would not be considered saturated until there was one in 80 percent of homes.
(B) Among the items handled by video distributors are many films specifically produced as video features.
(C) Few of the early buyers of video recorders raised any complaints about performance aspects of the new product.
(D) The early buyers of a novel product are always people who are quick to acquire novelties, but also often as quick to tire of them.
(E) In a shrinking market, competition always intensifies and marginal businesses fail.
D  最初买这些产品的人也最容易厌倦他们 这怎么就削弱结论了呢？

本人逻辑实在不好。。。请大家帮忙。。。谢谢啦~

cherrydew

第一道：C说明了这个processes不好，但没有说明那种比较方式不好。答案这样理解，因为公司用的是预测的方式，所以之前可能认为不用投资；但这样的话，其他公司就会从这里抢走客户，所以这种方式不好

第二道 lower的地方 有城市被摧毁以后的东西，说明middle代表了屠城以后的时间

第三道，假设就是seat bell能减少受伤，这样推理的话就知道除了这80%，其他人是带bell的 你看看这些人是超过20%伐，因为80%只是车祸中受伤的部分

第四道，这些人六个月以后没兴趣了，但喜新厌旧，会再去买新的

加油

-- by 会员 2008115061 (2010/8/18 23:03:40)

谢谢~可是我还是有些没懂。。
第一题 公司如果按照C去做的话 就会因为收不回成本而不去进行这些投资了啊 但是这些投资很多年后会产生净利润的  这就说明了一个disadvantage啊
第三个。。没看懂。。。。不好意思啊。。。
第四个 题目没表达出来会去买新的的意思呀 只说他们会厌倦这些产品  那不是反过来加强了题目的结论吗

2008115061

第一道：C说明了这个processes不好，但没有说明那种比较方式不好。答案这样理解，因为公司用的是预测的方式，所以之前可能认为不用投资；但这样的话，其他公司就会从这里抢走客户，所以这种方式不好

第二道 lower的地方 有城市被摧毁以后的东西，说明middle代表了屠城以后的时间

第三道，假设就是seat bell能减少受伤，这样推理的话就知道除了这80%，其他人是带bell的 你看看这些人是超过20%伐，因为80%只是车祸中受伤的部分

第四道，这些人六个月以后没兴趣了，但喜新厌旧，会再去买新的

加油

cherrydew

帮忙呀~~~~~