我说说我的理解 过去的有20%为unnecessarily surgery 现在新的只有二个为error diagnoses.而其它98为correct diagnoses. 结论Clearly, using this test, doctors can largely avoid unnecessary removals of the appendix without, however, performing any fewer necessary ones than before, since ______. 其实这类似找assumption……就是要有B这个前提你才能推出结论啊….
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 ->IR 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 ->这不就WEAKEN新技术好 D. every patient who is diagnosed with this test as having appendicitis has more than one of the symptoms generally associated with appendicitis ->IR 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->IR
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