Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers,...

题目信息

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

参考答案及共享解析

共享解析来源为网络权威资源、GMAT高分考生等；如有疑问，欢迎在评论区提问与讨论

正确答案： C:Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does

F1：肉眼不能判断皮肤discoloration和皮肤癌的区别，诊所需要通过皮肤组织测试来确定 F2：在W医院，确诊的花费下降，因为买了一个可以诊断皮肤癌的造影仪器，和皮肤组织测试一样可靠 C：虽然仪器很贵，诊所也应该考虑买一台来降低诊断开销。判断 A病人在诊所等待确诊时间是否比医院短（未提到时间，无关） B机器原理是否被科学界接受很久，无关 C仪器在诊所是否会比在医院使用率低很多。-需要考虑，因为如果使用率低，节约的cost无法抵消昂贵的仪器费用。 D是否在一些特定的皮肤dicoloration中，肉眼可诊断出患有皮肤癌（无关） E在这个国家其他地方的医院是否有购买这个仪器（无关）

笔记