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标题: gwd21－33 [打印本页]

作者: ayang1017 时间: 2005-10-5 22:24
标题: gwd21－33

GWD 21-33

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 bye 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 can absorb

C. world-class athletes turn in record performance 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

答案b，这道题还挺新鲜，思路理不清

作者: ayang1017 时间: 2005-10-5 22:25

诶亚，明白了～

作者: earlybirdcyu 时间: 2005-10-11 10:27
请问GWD-21 到那里下栽。多谢！！！

作者: butterfinger 时间: 2005-10-17 18:02

ayang我仍不明白

能否赐教

原题的理由与A选项正好相反

虽然都可解释作为一正一负的理由

但题目画线部分不是仅限于反面理由的叙述??

作者: howardwang 时间: 2005-10-17 23:23

答案是B.

本题从形式上，我还真是第一次见到（见识短啊！）。

仔细一看，这个题就相当于填空题，你可以认为boldface部分是空白好了。

只需要找理由说明，为什么Such water would be useless in improving physical performance。

选项B.说明，肌肉已经无法再吸收更多的氧了。所以，Such water would be useless in improving physical performance。

作者: 马上考 时间: 2005-12-18 13:33
up!

作者: hwhhs 时间: 2006-7-2 13:36
.

作者: colorful_na 时间: 2007-7-9 11:28
a

作者: 罗马青年 时间: 2007-7-18 00:45
up

作者: goldtime 时间: 2007-7-18 07:15

I am not NN, but I want to try to explain

because the bold sentence "the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs'' is the reason why ''Such water would be useless in improving physical performance, ''

B also provide the reason just like the bold sentence. So I think B is right.

作者: sunwenq 时间: 2007-8-21 08:55

开头讲了One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream 说明了muscles 不能够从bloodstream吸收足够的氧气。

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

这是不是矛盾啊？请NN指点！

作者: HHB 时间: 2007-8-21 14:54
原题highlight部分，是对前面信息的weaken；B也一样，是weaken.

作者: sunwenq 时间: 2007-8-21 17:00

谢谢ls, 我把第一句理解错了。其实应该是muscle在某因素被限制了吸收氧气，而不是没有足够的氧气吸收。

作者: mimixiaxia 时间: 2007-8-29 12:16
UP

作者: 阿土莎莎 时间: 2007-12-2 01:56
up

作者: eileenmu木 时间: 2008-3-22 17:09

懂了，thank you

[此贴子已经被作者于2008-3-22 17:11:29编辑过]

作者: lynn_ql 时间: 2009-7-18 06:13
ok

作者: wy88sunny 时间: 2009-7-25 21:07

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