昨天想上传test21，但怎么也不成功。只好回家睡觉了。今天先把阑尾的那道帖上供大家讨论
本人26日考，希望能给大家带来jj。这几天心里越来越没底了。希望能托大家的福考个好点成绩
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________________
a: the patients who are correctly diagnosed with this test as not having appendicitis invariably having medical conditions that are much less serious than appendicitis
b: the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it
c:all of the patients who are diagnosed with this test as having appendicitis do, in fact, have appendicitis
d:every patient who is diagnosed with this test as having appendicitis has more than one of the symptoms generally associated with appendicitis
e: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
谢谢！你一定能行！ 大家讨论一下答案吧！
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