28赴考场，CR越做越差，思维陷入误区了。。。大家帮帮忙

hallieJJ · 发表于 2010-10-21 21:33:46

GWD21-Q33
One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream.Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled “SuperOXY,” that has extra oxygen dissolved in the water.Such water would be useless in improving physical performance, however, since
the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

A.the water lost in exercising can be replaced with ordinary tap water

B.the amount of oxygen in the blood of people who are exercising is already more than the muscle cells can absorb

C.world-class athletes turn in record performances without such water

D.frequent physical exercise increases the body’s ability to take in and use oxygen

E.lack of oxygen is not the only factor limiting human physical performance

key is B,
此题版上有讨论，但是只见NN都分析这个无关，那个无关，我真的不晓得怎么个无关法，我的死穴就是老把无关想成有关呀！！！！要命。。。
此题我想问， E是怎么个无关法？？？我的想法是，既然缺氧不是造成 limit human physical performance的唯一原因，那么即便氧气补进去了，也白搭，useless, 因为还有其他很多因素制约着 physical performance嘛

帮帮我吧！我思维转不过来了。。。。

gaor · 发表于 2010-10-21 22:28:29

文章问same function in the argument as the statement in boldface，就是说支持 Such water （has extra oxygen dissolved） would be useless in improving physical performance

文章第一句说One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. 所以水里加氧有可能有用

E的问题是不能证明这个水没用，而B直接说明这种水没有用

hallieJJ · 发表于 2010-10-21 23:11:24

谢谢LS，不过我还是挺晕的，唉。。。。我再琢磨琢磨，淡定淡定，呼~

beggerQ · 发表于 2010-10-21 23:30:46

你要是不知道怎么分辨无关有关,就用"代入法"看看选相里哪个选相符合题目要求.

祝歌靓 · 发表于 2010-10-21 23:34:15

首先题目要否定的是那些声称可以补养的水没用，不是要否定缺氧对人体运动表现的作用，所以E和boldface的功能不同其次，boldface 里说的是 the only way 也就是全面否定，E并不是……that's my opinion

hallieJJ · 发表于 2010-10-22 01:50:32

啊哦，明白了，首先要关注的是，能不能补养~ 那个E，是补了氧有没有用。。。。我总是自HIGH~把握不准削弱点
谢谢楼上各位

28赴考场，CR越做越差，思维陷入误区了。。。大家帮帮忙

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