28. Ordinary mountain sickness, a common condition among mountain climbers, and one from which most people can recover, is caused by the characteristic shortage of oxygen in the atmosphere at high altitudes. Cerebral edema, a rarer disruption of blood circulation in the brain that quickly becomes life-threatening
if not correctly treated from its onset, can also be caused by a shortage of oxygen. Since the symptoms of cerebral edema resemble those of ordinary mountain sickness, cerebral edema is especially dangerous at high altitudes.
Which one of the following is an assumption on which the argument depends?
(A) The treatment for ordinary mountain sickness differs from the treatment for cerebral edema.
(B) Cerebral edema can cause those who suffer from it to slip into a coma within a few hours.
(C) Unlike cerebral edema, ordinary mountain sickness involves no disruption of blood circulation in the brain.
(D) Shortage of oxygen at extremely high altitude is likely to affect thinking processes and cause errors of judgment.
(E) Most people who suffer from ordinary mountain sickness recover without any special treatment.
答案选A
这道题目先讲了ordinary mountain sickness怎么样的，然后又讲了cerebral edema是怎么样，它们两者有共同点就是symptoms of cerebral edema resemble those of ordinary mountain sicknes，所以如果不当心的话，就容易把cerebral edema 看成是ordinary mountain sickness那样的话is especially dangerous at high altitudes.
A. 选项，提出了一个假设，就是他们两者的医疗方法不同，因为如果相同的话，用治疗普通登山症的方法也可以治cerebral edema，就不会有危险了
B. 无关选项
C. 讲普通的登山症怎样，文中已经讲了，不是什么前提
D. 无关选项
E. 无关选项
The answer should be A,
the mountain climber know very well how to treat ordinary mountain sickness, since the symptoms are the alike, if they treat cerebral edema the same way as they treat ordinary mountain sickness, the danger of cerebral edema would be especially dangerous at high altitudes.
B,C :the description of B,C doesn't show any difference on high altitudes.
D : 'thinking processes and cause errors of judgment' were never mentioned in the description. It could be an answer, but the not so good as A.
E didn't answer why 'cerebral edema is especially dangerous at high altitudes'.
这提正解的思路（黄色）我知道了，但是我的思路（绿色）就是不对路，请各位指教下……
我的想法： 原题： A病是……B病是……，AB有类似症状，故B在高纬度很危险
我想的是在B和高纬度间架桥，高纬度会阻碍人们思维判断过程，正好对应了B病阻碍大脑血液循环
请问哪里有问题？ 怎样才能想到正解思路而避免走偏呢？迷惑…
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