求助 费费28

girlwithwings

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

我的理解
A的情况：即使知道他们2个的治疗方法不一样，也不能马上得出特别危险的结论。
因为还必须在高山病容易马上治疗，而浮肿没那么简单可以治疗的假设前提下，得出特别危险的结论吧。



我选B  认为浮肿是会导致昏迷的，言下之意比高山病来得严重，所以特别危险。
把B取非，如果Cerebral edema 不会导致昏迷（也就是不是那么严重）的话，那么，就不特别危险。
谁来解释一下。

croustillant

Cerebral edema之所以会致命在高纬度的地方，是因为他没有被及时得正确治疗。quickly becomes life-threatening if not correctly treated from its onset，但是Cerebral edema的缺氧症状又和高原反应一样，所以人们会认为那个是高原反应，而不是Cerebral edema。然后用治疗高原反应的方法来及时治疗Cerebral edema。---这样会导致危险，所以前提是治疗方法不同。

girlwithwings

感谢