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题库 / GMATLA-CR-73
Which of the following most logically completes the passage?
Appendicitis (inflammation of the appendix) is potentially fatal; consequently, patients with symptoms strongly suggesting appendicitis almost always have their appendix removed. The appropriate surgery is low-risk but performed unnecessarily in about 20 percent of all cases. A newly developed internal scan for appendicitis is highly accurate, producing two misdiagnoses for every 98 correct diagnoses. Clearly, using this test, doctors can largely avoid unnecessary removals of the appendix without, however, performing any fewer necessary ones than before, since ______.
the patients who are correctly diagnosed with this test as not having appendicitis invariably have medical conditions that are much less serious than appendicitis
the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it
all of the patients who are diagnosed with this test as having appendicitis do, in fact, have appendicitis
every patient who is diagnosed with this test as having appendicitis has more than one of the symptoms generally associated with appendicitis
the only patients who are misdiagnosed using this test are patients who lack one or more of the symptoms that are generally associated with appendicitis
这个题做对了但是看第二遍的时候一度感觉第一遍自己是蒙对的...
①这种新的test可以提高诊治的精度
②从两个方面体现：避免不必要的阑尾摘除+不减少必要的阑尾摘除（读懂最后一句太关键了！！要把自己带进去理解题目！！fewer necessary ones！注意ones的理解！！）
③怎么可以有效的知道它的效果呢！！B选项：那些确认是被误诊的案例，都是那些本身没有但是被认为有的（没有放过一个真正有阑尾的人！！）
真的有时候很容易被插入语陷进去 感觉自己不理解题意！
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