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 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 have 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
以下是來自精美的總結:
4.補全文章，a有潛在的致命危險，有a徵兆的病人基本上都切除了a。a的手術是低風險，並且在所有病例裏有20％是沒有必要的。一個新發展的對a的內部掃描非常準確，相對於98個正確的診斷產生2個誤診。非常清楚，用這種測試，醫生大大避免沒有必要的切除a因為，b誤診把沒有闌尾炎的歸為有的～
可是我還是不懂，這個儀器誤診把沒有闌尾炎的歸為有的...
那不就表示如果進行手術完全是沒有必要的，跟提幹一樣阿...，
腦袋已打結，懇請高手將我打醒~~~~~
