og 11 求教1题

chenliqiang

112. In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when,

in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.

Which of the following, if true, gives the most support to the recommendation above?

(A)          The accepted treatment for pironoma does not have damaging side effects.

(B)          The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma.

(C)         In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in

(D)          The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma.

(E)          All laboratory tests to detect pironoma have the same proportion of false negative results.

答案是E ，请问为什么选择E阿。。求教。

gmat_cxl

从题目中可以知道两个概念
false Positive result: Good ->(误以为) Bad
false Negative result - Bad->(误以为) Good
in common sense, 一般情况是要减少false negative result. 但是文中推荐的方法是要保证false Positive result最少。说明我们需要有依据来说明false negative result的状况。E很好地说明了，内科医生的方法是合理的。

A，这个和问题无关
B，也和问题无关
C，和问题无关
D，这个包括两个测试结果，也不能支持为什么内科医生要保证false positive result最少。