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The quality of unrefined 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.

If the statements above are all true, which of the following conclusions is best supported by them ?

正确答案: C

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发表于 2010-5-26 23:26:05 | 只看该作者 回帖奖励 |正序浏览 |阅读模式
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The quality of unrefined 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.



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.
本题正解C,想请问大牛,为啥A错了呢?谢谢咯~~

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发表于 2011-12-11 03:27:58 | 只看该作者
The quality of unrefined olive oil is not actually defined in terms of acidity, yet xxxxxx。
就像黑脸题,yet后才是文中立场,前面那句是背景或废话。定义橄榄油质量就是以其酸性负相关衡量。
C是对的,就是用yet后立场顺推。而楼上认为错仅是因为还是以中国思维读题目·
23#
发表于 2016-3-17 02:04:14 | 只看该作者
free oleic acid an unrefined olive oil contains per liter=oil’s acidity 约等于 its quality。YET前面的那句其实是强调“不能据此精确量化(accurately)”(但可以定性)。

C 没有量化只定性 符合题意

A 其实也是可以推出来的-3- 不过没有C明显 题目没明说 就当是无关吧
22#
发表于 2014-7-8 09:54:13 | 只看该作者
akiluk 发表于 2010-11-15 23:13
A不是无关 是考虑不周。。。。选错A滴同学看看我解释(也是给自己看的 我也选了A)题目为 Acidity 不能体现 ...

谢谢,说的很清楚了!
21#
发表于 2013-4-8 22:06:46 | 只看该作者
onlysilence222 发表于 2011-10-13 11:08
不管A如何,C是必然不对的。题目都说了酸性不决定油的质量了,C这不是明显的违反前提么gwd的答案讲解里头, ...

题目中说The quality of unrefined olive oil is not actually defined in terms of acidity。这里的defined不是“决定”的意思,而是说“在评价未精炼的油的质量时候,没有做关于其酸性的规定”

整个题目我来翻一下:“在评价未精炼的油的质量时候,没有做关于其酸性的规定。但是大量测试显示每公升为精炼橄榄油所含的油酸越少,质量越高。而橄榄油中所含油酸的比例又可以准确无误地反映/测量橄榄油的酸性。”

也就是说:油酸——(反映)质量。
          油酸又与酸性相联系
          所以,酸性和质量也有关系
          正确答案应该含有oleic acid 和 quality两个词
20#
发表于 2012-11-27 04:32:29 | 只看该作者
可是第一句不是说了The quality of unrefined olive oil is not actually defined in terms of acidity?
-- by 会员 kair2012 (2010/11/16 14:28:58)

define是指“定义”不涉及比较,但是原文其后补充了unrefined olive oil的free oleic acid越少,unrefined oliver oil的qualtiy越高,并且free oleic acid的比例是衡量oil酸度正确的标准。所以可以推出酸度越低,unrefined olive oil的quality是越高的。C正确。
define得出的(个人觉得应该)是指一个具体的数值或标准。比如说白酒的qualtity不能由酒精浓度来定义因为所采用的工艺和原料等都会影响的白酒的quality,如果我们要给这瓶白酒打分,可以是因为酒的工艺好原料好却因为酒精浓度不高,我们只给它75分。可是这只对是某一瓶白酒quality的评价,而我们通常都会说酒精浓度越高越纯的白酒,质量更好的,这才涉及到了不同的白酒间的简单比较。
19#
发表于 2012-9-21 10:56:29 | 只看该作者
感谢思路点拨!Counter-premise是主P,转折后才是作者想表达的,yet后是真正立场:Acidityquality是相关的。


The quality of unrefined olive oil is not actually defined in terms of acidity, yet xxxxxx。
就像黑脸题,yet后才是文中立场,前面那句是背景或废话。定义橄榄油质量就是以其酸性负相关衡量。
C是对的,就是用yet后立场顺推。而楼上认为错仅是因为还是以中国思维读题目·
-- by 会员 逆水潜龙 (2011/12/11 3:27:58)

18#
发表于 2012-8-22 10:16:00 | 只看该作者
个人感觉,C是绝对挑不出来错的答案,所有相关名词都是原文出现的,并且说法非常保险,既然酸度和质量好坏挂钩,酸度中间的质量一定在中间。
选答案要选出错概率最小的那个。
17#
发表于 2012-5-14 16:11:59 | 只看该作者
我觉得第一句话的意思理解可以为:品质不是由酸度来定义的,但是这里并没有否定酸度可以决定品质吖~~也就是说,可以理解为除酸度以外还有其他的一些因素共同构成品质的定义,但是酸度也会体现出品质
16#
发表于 2012-5-9 16:19:14 | 只看该作者
漂亮的回答!二楼那种乱说的还误导别人……
15#
发表于 2012-4-13 16:13:45 | 只看该作者
老外选C的多嘛 http://gmatclub.com/forum/the-quality-of-unrefined-olive-oil-is-not-actually-defined-52837.html
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