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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 ______.

正确答案: B

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GWD 15 - 逻辑 NN们帮看一下

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发表于 2011-3-31 10:46:52 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
4. GWD21-Q4:

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 ______.



  1. the patients who are correctly diagnosed with this test as not having appendicitis invariably have medical conditions that are much less serious than appendicitis

  2. the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it(答案)

  3. all of the patients who are diagnosed with this test as having appendicitis do, in fact, have appendicitis

  4. every patient who is diagnosed with this test as having appendicitis has more than one of the symptoms generally associated with appendicitis

  5. 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

    请牛牛们帮我解释一下 黄线标注的地方 我不太懂那个意思  尤其是 without, however, performing any fewer necessary ones than before, since ______.



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沙发
发表于 2011-3-31 11:49:06 | 只看该作者
字面翻译就是这个
显然,利用这种测试,医生们可以很大程度上地避免做不需要的阑尾切割手术,但是也不会造成那些该做的手术的数目减少,因为...
without, however, performing any fewer necessary ones than before
把它说白了,就是以前该做的现在也不会少做
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