快考了，几道JJ对答案！－CR-->bryony转移

robertchu

Agree with miaoyin_tx.

Evidence 1: "tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality."  In other words, free oleic acid (FOA) and quality move in opposite direction.

E2: "The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil's acidity." I.e., FOA and acidity move in the same direction.

Therefore, one can logically infer that:
  intermediate in acidity --> intermediate in FOA --> intermediate in quality.
thus C is correct.

dream1111

以下是引用lawyer_1在2004-7-6 11:41:00的发言：

一。同意REEDSONG5题的分析

二。觉得那个选项都理由不充足，但倾向A选项，理由如下：

原文三句话：1。实际上，未提炼橄榄油的质量不由酸性来定义

                     2。但是，大量试验显示，未提炼橄榄油的游离油酸越少，质量越好

                     3。（提炼后）橄榄油的游离油酸等同于橄榄有的酸性（只有游离油酸，没有其他酸）

推理的结论：4。由1和2可推出未提炼橄榄油的游离油酸不等同于其酸性，即还有其他酸。

                     5。由3和4可推出提炼的过程中，其他酸被去掉。

                     6。在去掉其他酸的过程中，游离油酸也会相应去掉一些（去酸的过程经常是中和的过程，各种酸都要相应去掉一些）。而且由2可知游离油酸对橄榄油来说，不是好东西，能去掉多少便去掉多少。总上两点，提炼过程中，游离油酸会相应减少。即A（CONCENTRATION指浓度）

B错。理由是违反1。

C错。理由是由4知未提炼橄榄油中还有其他酸，而酸性取决于游离油酸和其他酸。质量却只和游离油酸有关（或者准确说原文没说出关系）。所以没法比较酸性和质量的相对关系

D错。理由是违反4。

E错。原文根本就没这方面的信息

I disagree with this above.

It is not appropriate to think of the ' an olive oil ' as（提炼后）橄榄油. in fact, it should be considered all kind of olive oils, including unrefined oil, as it is used to refer to an unrefined one in A.

C, I think. This question, in fact, is demonstrating a concept on absolute and comparative. Whether the quality  of oil is defined or determined or not means an absolute concept, for example the absolute relation between level of acid and grade of quality of oil; but it is consistent with that the quality of oil can be tested comparatively.

[此贴子已经被作者于2004-9-19 14:17:17编辑过]

future2005

to robertchu:

Your reasoning is very reasonable. But I'm still confusing with my reasoning. Where is the problem of my reasoning?

following is my reasoning.

我选D.

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.

1. 注意第一句的yet, 是反对前面的陈述, 也就是作者认为---The quality of unrefined olive oil should be actually defined in terms of acidity. 这句话应与extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality所表达的意思一致. 由此可推出: acidity 就是 free oleic acid 的acidity.

2. The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.

注意accurate. 如果olive oil 还含有其他的acid, 那么The proportion of free oleic acid 就不可能是an accurate measure of the oil’s acidity.

gibtroll

答案為A, 由第一句話可得 unrefined olive oil 含比除free oleic acid其他的acid. 而僅 free oleic acid 決定 unrefined olive oil的 quality.

第二句refined過後的olive oil僅存 free oleic acid.

故前後兩句總合可得after refined其他acid被排除----注意choice A 中為 oleic acid而非 free oleic acid....oliec acid 為其他被排出 acid....故答案為A

joe11

以下是引用gibtroll在2004-9-28 21:17:00的发言：

答案為A,

I prefer  C.

由第一句話可得 unrefined olive oil 含比除free oleic acid其他的acid. 而僅 free oleic acid 決定 unrefined olive oil的 quality.

Disagree. Nothing shows that free oleic acid is the ONLY evaluation creterion of unrefined oliver oil.

第二句refined過後的olive oil僅存 free oleic acid.

第1句后半句 yet extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality 这里也没说仅存...

故前後兩句總合可得after refined其他acid被排除----注意choice A 中為 oleic acid而非 free oleic acid....oliec acid 為其他被排出 acid....故答案為A

人家整篇都在谈 unrefined oliver oil, A 谈 refined oilver oil, 已经 out of scope 了不说，而且concentration of oleic acid in the oil is reduced 存粹是 infer 太多。

roberta

是啊，为什么D不对呢

是不是D中ONLY用的太绝对了？可是题目最后那句 The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.不就说明了没有其他的acid了吗?否则，如果有其他酸，怎么算是accurate measure of the oil's acidity呢？这里的accurate到底如何理解是好呢？

请哪位nn来帮忙讲讲巴，感谢感谢！

[此贴子已经被作者于2004-10-6 1:56:07编辑过]

lshine

说一点不同的看法。

第一个我选e，第二个我选C.

第一个A不对，高速公路和铁路相关并不是定理，也不是这里的必要尝试，我生活在美国，居住的大城市里没有这个“规律”。E正确的原因是新的交通方式造成了更多人的使用，所以仅解决以前的交通量还是不够。

第二个选C.  A肯定不对，那位老兄提到那些复杂的东西，我怕连 ETS出题的人都不知道。C对是因为

1. acid = acidity

2. less acid = better quality

所以: intermediate acidity = intermediate acid = intermediate quality.

请大家指正：）

roberta

以下是引用roberta在2004-10-6 1:56:00的发言：

是啊，为什么D不对呢

是不是D中ONLY用的太绝对了？可是题目最后那句 The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.不就说明了没有其他的acid了吗?否则，如果有其他酸，怎么算是accurate measure of the oil's acidity呢？这里的accurate到底如何理解是好呢？

请哪位nn来帮忙讲讲巴，感谢感谢！

up up，请大家多多指教啊。。还是没想通的说

robertchu

"The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity."

The phrase "accurate measure" does not necessarily rule out the existence of other type acid in unrefined olive oil.

For example, assumping that there is another type of acid, acid X, which always exists together with FOA in same quantity, you can still say that the proportion of FOA is an accurate measure of acidity, but you cann't say that FOA is the only type of acid.  Get it?

流沙

以下是引用roberta在2004-10-6 1:56:00的发言：

是啊，为什么D不对呢

是不是D中ONLY用的太绝对了？可是题目最后那句 The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.不就说明了没有其他的acid了吗?否则，如果有其他酸，怎么算是accurate measure of the oil's acidity呢？这里的accurate到底如何理解是好呢？

请哪位nn来帮忙讲讲巴，感谢感谢！

D的the only实在太绝对了，文中没有这样的信息，只是说is accurate measurement，没说is the only accurate measurement，这两者是有差别的。我觉得c是对的。文章反复提到oil's acidity以及per liter。因为quality是由acidity/liter决定的，那么两种不同酸度的oil混合，它的酸度就是介于这两种oil的酸度之间，类似于数学平均，那它的quality也就是这两者之间