急!後天要考了 求助一題CR JJ

snew27

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.（B）

    

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

    --------------------------------------------------------------------------------------------------------

答案MS選B 可是我看不懂最後BOLD FACE的部分 有人可解釋下嗎
謝謝!!

[此贴子已经被作者于2009-5-27 22:59:47编辑过]

h5641

兄弟 我來了

你這CR JJ 從哪來的？ 我怎沒見過？

h5641

氧氣進入血管的唯一方法就是透過肺部進到肌肉里被吸收後才行

ehuang2008

the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs

只有氧气进入血液才能被肌肉吸收，而氧气进入血液的唯一方法是通过肺部。

黑体部分是反驳文章观点的。

所以你在选项里找一个同样能反驳文章观点的就好。

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

人们运动时体内血液中的氧含量已经超过了肌肉细胞所能吸收的量。言外之意，没有必要补充氧气了。反驳了文章。

h5641

以下是引用ehuang2008在2009-5-27 23:33:00的发言：

the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs

只有氧气进入血液才能被肌肉吸收，而氧气进入血液的唯一方法是通过肺部。

黑体部分是反驳文章观点的。

所以你在选项里找一个同样能反驳文章观点的就好。

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

人们运动时体内血液中的氧含量已经超过了肌肉细胞所能吸收的量。言外之意，没有必要补充氧气了。反驳了文章。

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

好像是說要扮演相同功能.

snew27

原來如此!!這裡真是太溫暖了 馬上解決了我的疑惑
這道JJ是在那個打包裡面的啊~~~~

h5641

以下是引用snew27在2009-5-28的发言：
原來如此!!這裡真是太溫暖了 馬上解決了我的疑惑
這道JJ是在那個打包裡面的啊~~~~

我的是在GWD 29.