【求助GWD一道逻辑题~~】

水色青空 · 发表于 2010-3-5 18:49:59

GWD-2-Q17:
The quality of unrefned olive oil is not actually defined in terms of acidity, yet extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality. The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.
未提炼的橄榄油的质量与酸度无关。
油酸越少橄榄油质量越高
油酸是油的酸度的准确衡量。
If the statements above are all true, which of the following conclusions is best supported by them?
A. When an olive oil is refined, the concentration of oleic acid in the oil is reduced.
B. The quality of an unrefined olive oil can be determined only by accurately measuring its acidity.
C. If an unrefined olive oil is intermediate in acidity between two other unrefined olive oils, it will also be intermediate between them in quality.
D. Free oleic acid is the only acid that unrefined olive oil contains.
E. People who judge the quality of unrefined olive oils actually judge those oils by their acidity, which the judges can taste.

答案选C，可是觉得没有理由能这样推出来？A呢？要如何排除其他选项~？

水色青空 · 发表于 2010-3-5 19:16:33

顶一下

水色青空 · 发表于 2010-3-6 15:40:55

顶~~~帮帮忙~

水色青空 · 发表于 2010-3-7 17:26:39

http://bbs..org/dispbbs.asp?boardid=40&Id=196047&page=8

the proportion是关键

水色青空 · 发表于 2010-3-7 17:30:56

quality<--fo→acidity,这就是文章的叙述顺序~所以C提到了这个关系~正确！

【求助GWD一道逻辑题~~】

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