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
据说选B,但我以为选C
The misdiagnosis happens in those who, in fact, do not have the appendicitis. It is a false positive sympotom.
To be discussed....
The answer B:the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact,have it.
这句话的意思是错误的诊断是把没有病的人诊断成有病呢,还是把有病的诊断成没有病呢?
这个 in fact 在此指的是什么是事实呢?
顶上去
支持B
the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it
请问,这一句,in fact, have it? 到底怎么理解啊?
很显然是B
the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it
的意思是,该检验方法误诊的病例总是那些实际上没有得阑尾炎而被误诊为得了阑尾炎的病例。
注意,还有一种误诊是本来得了阑尾炎,但是,却被判为没有阑尾炎的误诊。
只有前者才能满足题干的推理要求。后者是不能满足的。
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