翻过历史帖子没有~GWD17-Q23

jyw0411lsq

23. GWD17-Q23:

Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers, dermatologists at clinics have needed to perform tests of skin tissue taken from patients.At Westville Hospital
, dermatological diagnostic costs were reduced by the purchase of a new imaging machine that diagnoses skin cancer in such cases as reliably as the tissue tests do.Consequently, even though the machine is expensive, a dermatological clinic in Westville is considering buying one to reduce diagnostic costs.


Which of the following would it be most useful for the clinic to establish in order to make its decision?



A.Whether the visits of patients who require diagnosis of skin discolorations tend to be shorter in duration at the clinic than at the hospital

B.Whether the principles on which the machine operates have been known to science for a long time

C.Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does

D.Whether in certain cases of skin discoloration, visual inspection is sufficient to make a diagnosis of skin cancer

E.Whether hospitals in other parts of the country have purchased such imaging machines
答案是C ，虽然蒙对了，但是觉得C里面貌似无关啊，题目不是说climic 的事情么，这里面 怎么和医院比较起来了么？太诡异了，我一看到出现新词hospital , heavy use就想排除了，（无关），求救下CDer们的思路！

sdcar2010

"At Westville Hospital" vs. at the clinic.

C tells us that we are not comparing an orange with an apple.

jyw0411lsq

LS的意思是，C想告诉我们，我们不是去拿不同类的物质进行比较么？
是不是clinic比医院用的少的话，就说明machine可以买
        climic比医院用的多的话，就说明买machine就不合算了么？
我的理解对么，就是拿医院用machine的多少来作为基准去比较clinic，貌似无关啊？我怎么就是想不通了呢

sdcar2010

Premise: At Westville Hospital, dermatological diagnostic costs were reduced by the purchase of a new imaging machine.
The question: Should a clinic in Westville buy the same machine to reduce cost?

A hidden assumption is that the more times a machine is used to run a test, the more money saved by running the machine than by using a conventional test. Like all capital purchase, the high starting cost of buying an expensive machine can be compensated over time by cutting the cost of running the same assay over and over again.

If the answer to choice C is YES, then the machine will be under used in the clinic. Thus it is less likely to save money for the clinic to buy the machine.

If the answer to choice C is NO, then the machine will not be under used in the clinic, when compared with that in the hospital. Thus it is very likely that the clinic will reduce cost by purchasing the machine. In other words, the machine (apple) in the clinic is the same as the machine (another apple) in the hospital. Therefore, the clinic will reduce cost just like the hospital if the clinic buys and uses the machine similarly.

jyw0411lsq

这次真的明白了，原来审题问题很大啊
谢谢LS的解释

像风一样离去

up

lasiaberyl

A 说visits to be shorter in duration, so is this means that visitors who need this service would be less than in hospital?  If this is the case, then the use of the machine will be less, thus the costs can not be saved in clinic,right?

How to determine A isn't the correct answer?

perain

晕倒，没看到clinic和hospital，看题太不仔细了。。。。
是C没错

ljwsophie12

恩，第一次做也是审题不认真。没有发现clinic 和hospital不一样

sallyremy

同问A选项！！