118. According to a review of 61 studies of patients suffering from severely debilitating depression, a large majority of the patients reported that missing a night’s sleep immediately lifted their depression. Yet sleep-deprivation is not used to treat depression even though the conventional treatments, which use drugs and electric shocks, often have serious side effects.
Which of the following, if true, best explains the fact that sleep-deprivation is not used as a treatment for depression?
(A) For a small percentage of depressed patients, missing a night’s sleep induces a temporary sense of euphoria.
(B) Keeping depressed patients awake is more difficult than keeping awake people who are not depressed.
(C) Prolonged loss of sleep can lead to temporary impairment of judgment comparable to that induced by consuming several ounces of alcohol.
(D) The dramatic shifts in mood connected with sleep and wakefulness have not been traced to particular changes in brain chemistry.
(E) Depression returns in full force as soon as the patient sleeps for even a few minutes.
OG对ABCD的解释我没有明白。if sleep-deprivationcould be used as an effective treatment for severelydebilitating depression, the benefit derived would be so great that the occasional extra benefit of euphoria( choice A), the need for expending some extra effort ( choice B) the occasional drawback of impaired judgement(choice C), and the lack of thorough scientific understanding(choice D) would each be a comparatively insignificant consideration.
请帮忙解释一下。
“如果sleep-deprivation对治疗depression有效的话，ABCD中所提到的那些因素相对都可以不考虑。”
意思是如果S-D这个方法很奏效的话，即使存在ABCD中所提到的那些因素，这个方法还是可以被利用，还是很有价值的，不需要去考虑ABCD中提到的那些因素。也就是说，ABCD是提到了一些微不足道的细节，单就这些细节本身并不能阻碍S-D这个方法被广泛利用，必然是有更关键的因素使得这个方法不能用，比如E说的原因。
这下明白了。感谢携隐！
og这一大段长话，只在说一个问题：abcd与题目所要求的答案无关。简要分析下：题目求解sleep-deprivation为何不能治病？
a:=小部分人,sleep有副作用。（small 不影响整体，无关）
b:depressed patients醒着很困难(无关）
c:失眠加重会怎样（无关，加重疑惑）
d:失眠与化学变化（无关，纯属胡说）
只有e解释了失眠与depression病人之间的关系
对B有疑问：说depressed patients很难醒着，就是说他们很容易睡着，也就是说他们很难sleep-deprivation——那么，自然sleep deprivation就不能成为treatment way了。
请问我的思路错在哪里了？谢谢！
B其实是无关选项。
你的推理过程中被你认为的添加了不少前提，这是不允许的。
进一步讲，即使B可以考虑，那么也要跟E对比：B的意思可能是难于实行；E的意思是根本行不通。哪个更好呢？
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