【急问】一道JJCR题答案是什么？天亮就考了

mian328519

GWD17-23

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?

1. Whether the visits of patients who require diagnosis of skin discolorations tend to be shorter in duration at the clinic than at the hospital
           
2. Whether the principles on which the machine operates have been known to science for a long time
           
3. Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does
           
4. Whether in certain cases of skin discoloration, visual inspection is sufficient to make a diagnosis of skin cancer
           
5. Whether hospitals in other parts of the country have purchased such imaging machines

我刚才才看，我自己选的C，但是搜索了以前的两个帖子一个说选C一个说答案是D，请问到底选哪个？？

wenshan1117

選C 這題應該是考慮使用頻率高低 如果使用率很高 當然就能cover掉昂貴的成本 那購買機器就是划算的 而題目第一句:Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers就告訴你不能選D了! 不用考慮D這個答案 D還出現certian這個字 相當於some 是一個三成對七成錯的字眼

[此贴子已经被作者于2008-10-14 0:24:10编辑过]

mian328519

哦，好的，谢谢哈，主要是说C那帖子是别人讨论出来的，说D那帖子就直接说答案是D，我就费解了

ltwy16323

C,应该没错的

文凯

肯定是C

LZ好运，考完也回来和大家聊聊

mian328519

恩，尽量提供有用的东西哈，我很菜的，现在还在抱佛脚