作者kenting15 (我不像我)
看板GMAT
标题[语文] CR GWD25-36
时间Wed Jul 15 15:20:22 2009
36. GWD25-Q36
The chemical adenosine is released by brain cells when those cells are
active. Adenosine then binds to more and more sites on cells in certain areas
of the brain, as the total amount released gradually increases during
wakefulness. During sleep, the number of sites to which adenosine is bound
decreases. Some researchers have hypothesized that it is the cumulative
binding of adenosine to a large number of sites that causes the onset of
sleep.
Which of the following, if true, provides the most support for the researchers'
hypothesis?
A. Even after long periods of sleep when adenosine is at its lowest
concentration in the brain, the number of brain cells bound with adenosine
remains very large.
D. Some areas of the brain that are relatively inactive nonetheless release
some adenosine.
答案是D
其实我看不太懂最後some researchers的推论
不过先排除了几个无关的选项
请问这题该如何解....(这题答案无法用技巧some删题> <)
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※ 编辑: kenting15 来自: 219.70.188.224 (07/15 15:20)
※ 编辑: kenting15 来自: 219.70.188.224 (07/15 15:21)
1F：推 ylchen:我会想选B耶！请高手解惑为什麽选D呢？ 07/15 16:11
2F：推 Calla:我看网路上说official answer是B 不过我稍微想过 请指正 07/16 01:41
3F：→ Calla:排除ACD: A 反驳研究人假设, CD和结论(adenosine和醒/睡的 07/16 01:42
4F：→ Calla:关连)无关 07/16 01:42
5F：→ Calla:E仔细观察也错:压力使人在A很多时依然能保持清醒 是语病 07/16 01:44
6F：→ Calla:并无法证明A的累积会导致睡眠... 只有B(已知咖啡因会阻绝 07/16 01:47
7F：→ Calla:A累积同时有让人保持清醒的功效)=>支持A累积到很多会zZZ 07/16 01:48