12. The only purpose for which a particular type of tape is needed is to hold certain surgical wounds closed for ten days—the maximum time such wounds need tape. Newtape is a new brand of this type of tape. Newtape’s salespeople claim that Newtape will improve healing because Newtape adheres twice as long as the currently used tape does.
Which of the following statements, if true, would most seriously call into question the claim made by Newtape’s salespeople?Claim:粘的时间长，所以好，题目要围绕着claim的因果关系
(A) Most surgical wounds take about ten days to heal.
(B) Most surgical tape is purchased by hospitals and clinics rather than by individual surgeons.（surgeon[ 5sE:dVEn ]n.外科医生）补充信息，无关
(C) The currently used tape’s adhesiveness is more than sufficient to hold wounds closed for ten days.
(D) Neither Newtape nor the currently used tape adheres well to skin that has not been cleaned.（C）OG一题：不能完成无需完成的任务
(E) Newtape’s adhesion to skin that has been coated with a special chemical preparation is only half as good as the currently used tape’s adhesion to such coated skin.粘合度，与原文的A—》B无关
答案是C 我理解
请问A错在哪里呢
我认为A也是答案 大部分的伤口最好需要十天 而目前的tape可以粘十天 那么就无需20天的tape
我的思路错在哪里呢/
谢谢
A is wrong because the original passage does not give any indication that "目前的tape可以粘十天".
This sentence, "The only purpose for which a particular type of tape is needed is to hold certain surgical wounds closed for ten days," only says that the purpose is to hold wounds closed for ten days, it doesn't indicate whether current tape is already able to do so or not.
robert , thank you very much for your kind response.
I sadly found that most of my mistakes , probably 70 percent of all errors arise from my poor and hasty reading comprehension. And the logic in gmat sometimes requires the exact reading .
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