lsat 16 (2) questions 问漏了

1stzhang

21. When a person with temporal lobe epilepsy is having an epileptic seizure, part of the brain's temporal lobe produces abnormal electrical impulses, which can often, but not always, be detected through a test called an electroencephalogram (EEG). Therefore, although a positive EEG reading-that is, evidence of abnormal electrical impulses-during an apparent seizure is a reasonably reliable indicator of temporal lobe epilepsy, __________

Of the following, which one logically completes the conclusion above?

(A) a positive reading is just as reliable an indicator of the absence of temporal lobe epilepsy

(B) a positive reading can also indicate the presence of other forms of epilepsy

(C) a positive reading is more frequently an erroneous reading than is a negative one

(D) a negative reading does not mean that temporal lobe epilepsy can be ruled out

(E) a negative reading is just as reliable an indicator of the presence of temporal lobe epilepsy

看到这个题目我没有什么思路，请解答一下？？

cranberry

我的思路可能比较简单化，我的理解是既然文中说EEG只能在某些时候探测出这种什么东东，而结论的前半句用了让步状语，我自然的感觉后半句是要说和前半句不同的东西，所以我认为D恰好补充说明，使得句意比较完整。

mindfree

Agree. As you can see from the passage, sometimes EEG can not detect the pulses. So D finishes the passage well.