2. 外语
  3. Hastings’ contracture is a disorder of the connective tissue in one or both hands, most commonly causing loss of mobility. A sur

Hastings’ contracture is a disorder of the connective tissue in one or both hands, most commonly causing loss of mobility. A sur

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问题 Hastings’ contracture is a disorder of the connective tissue in one or both hands, most commonly causing loss of mobility. A survey of thousands of medical-insurance claims found that over 30 percent of people who had one hand operated on for Hastings’ contracture underwent surgery a second time for this disorder within three years. Clearly, therefore, a single surgical treatment of Hastings’ contracture is often ineffective at providing long-term correction of the disorder. Which of the following", if true, most seriously weakens the argument?
选项 A、The medical-insurance claims did not specify whether the surgery was on the patient’s right or left hand.
B、The surgical techniques used to treat Hastings’ contracture are identical to those used successfully to treat certain work-related injuries to the hand.
C、A separate survey found that 90 percent of patients operated on for Hastings’ contracture report increased hand mobility within one month after the surgery.
D、All of the patients in the survey were required by their insurance companies to seek a second opinion from a qualified surgeon before undergoing the operation.
E、Many people who have Hastings’ contracture choose to tolerate its effects rather than undergo the risks of surgery.
答案A
解析 本题属于典型的由一个survey而得出一个结论，即“B，A”型的削弱，思路多为“有其他原因导致B”。(A)说明医疗保险索赔并没有说明是针对患者的左手还是右手进行的，可能有一些人第一次手术时只针对左手进行，因三个月后右手连接组织失调，而进行第二次手术，所以削弱以上结论；(C)易误选，但(C)讨论的是一个自由的情况，与“长期矫正是否有效”无关。
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