快考了，几道JJ对答案！－CR-->bryony转移

roberta

非常感谢robertchu和流沙的详细解释及其举例！！很清楚哦

呵呵。。。get it get it 了，谢谢谢谢

看来偶原先对accurate的理解太狭隘了

roberta

hehe...发现这个帖子发完，自己的等级已经是侠之大者了，好开心哦～～～

嘿嘿，自己恭喜自己一下

mikeleven

以下是引用future2005在2004-9-26 0:18:00的发言：

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.

D是一定错的，不论题目是否推的出这个结论。
因为事实上橄榄油含很多种酸~!!大家可以自己去多了解橄榄油的成分。

ETS不可能出一个题目，推出与事实不符的结果。
想想看，如果有个题目，标准答案竟然是"月球上有兔子"，这种题目怎么拿出来考学生@_@

呆板彻底

gwd 10 30

a推了太多东西了，没那么复杂

同意c.不过c好像只用了第一句话，呵呵。。

jimjohn

Agree 6.C. A is truly out of scope. no doubt about it. For D,  there may be some other acids in the oil but first, their proportions are constant, second, they may be so little, that can be  ignored.

cindy2004

以下是引用HRperson在2004-6-26 14:24:00的发言：

6.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?

看了大家的讨论我却觉着应该选b，呵呵，不要砸我

明确：此题要求承认 the statements above are all true, which of the following conclusions is best supported by them? 请注意是“by them”,要由论述内容间的联系和逻辑推理得出，而不是仅针对某一点得出结论，或者借助背景知识得出。

那题目中说了什么呢？

首先，提出The quality of unrefined olive oil is not actually defined in terms of acidity，

接着，用“yet”提出了（就像阅读中，提出不同观点的标志词）：extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality  （我们可与看到这里主要是阐述“free oleic acid”和“its quality”的关系，那我们就会想了，这个“free oleic acid ”和开头提出的“acidity”有没有关系呢？又是怎样的关系呢，明确了它们的关系，才知道作者的不同观点是什么）

于是，我们就看到了“The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil's acidity.”（这里说明油中proportion of free oleic acid 是油的“acidity”的“an accurate measure”，明确了不同观点中提出的“ free oleic acid ”和开头观点中的对象“acidity”的关系）

按照这个逻辑，我们可以看出题目中三个对象关系即： “free oleic acid ”充当了桥梁的作用，把题目中的另外两个对象“quality of an unrefined olive oil”和“ its acidity”联系起来了。

则我们可得出这个不同观点（确切的说应该是更精确的观点）的结论，即：

The quality of an unrefined olive oil can be determined only by accurately measuring its acidity

黑体部分可以看出，以上推理得出的结论是比文章开头提出观点的更严密的观点。

看看其他选项：

A.When an olive oil is refined, the concentration of oleic acid in the oil is reduced.   

无法单纯由题目中陈述的内容推出来的，而且“refined”题目中也未涉及，另外，该选项也未涉及有关酸和质量的推论，所以排除；

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.

只是针对不同观点的内容进行了举例，没有利用 The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil's acidity.这点信息，所以非全面结论。

D.Free oleic acid is the only acid that unrefined olive oil contains.

只是针对 The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil's acidity.这点信息得出的推论，非全面结论。

E. People who judge the quality of unrefined olive oils actually judge those oils  by their acidity, which the judges can taste.

该选项增加了跟题目推论无关的对象“people...acidity, which the judges can taste”所以最容易排除。

hpp920

此题, 我觉着A不对. A如果改成:

Ｗhen an olive oil is refined, the concentration of other acid in the oil is reduced. 没准正确．既原文能推出其他酸的浓度降低，　但是free oleic acid的浓度可说不准，很可能保持不变．

对于Ｃ，　我也有点疑问

intermediate in acidity --> intermediate in FOA --> intermediate in quality.

做题时是这么想的，　但过后一看，　又有疑问：

文中说：１．对于unrefined olive oil是intermediate in FOA --> intermediate in quality

２．对于olive oil是intermediate in acidity --> intermediate in FOA

对于选项Ｃ是对于unrefined oil 是intermediate in acidity --> intermediate in quality

那么问题就是对于unrefined oil, 我们能推出intermediate in acidity --> intermediate in FOA 吗？

不管怎样，　我还是倾向于Ｃ．　盼ＮＮ们再讨论！

davidcopper

以下是引用ReedSong在2004-6-28 19:20:00的发言：

噢，好像有些明白了，多谢！

我原来对ONLY的理解是：仅仅通过精确测量acidity就可以决定The quality of an unrefined olive oil ，觉得没错呀；

但如果把ONLY理解成：只有通过精确测量acidity才可以决定The quality of an unrefined olive oil ，那就有问题了，因为完全可以不测量acidity而根据free oleic acid 的含量来决定。

这里就应该是你的第一种理解啊，如果要第二种理解，only必须放在can的前面，所以我发现这题B和C好象是正关联的，C对，则B也应该对。

seekmydream

olive oil 那道题 lawyer 分析得很有道理,答案为A.有一点要补充的是:

选项A讲的是oleic acid(A. When an olive oil is refined, the concentration of oleic acid in the oil is reduced.), 而不是free oleic acid. 该选项说oleic acid 是olive oil 含有的, 即给出其他酸的一个例子. 等于说: When an olive oil is refined, the concentration of acids other than free oleic acid in the oil are reduced(FOA是否减少对解题并不重要).

C与原文相反. unrefined oil 的质量不能由酸度决定(第一句). 原文最后一句 The proportion of free oleic acid that an olive oil containsis is an accurate measure of the oil's acidity. 指的是refined oil.

B与原文相反. unrefined oil 的质量由free oleic acid (FOA) 而非acidity(暗示含有其他酸)决定.

D与原文相反. FOA并非unrefined oil 的唯一酸.

E与原文相反. unrefined oil 的质量不能由酸度决定.

小I爱漂漂

5.A recent poll found that over 80 percent of the residents of Nalmed Province favored a massive expansion of the commuter rail system as a means of significantly easing congestion on the province's highways and were willing to help pay for the expansion through an increase in their taxes. nevertheless, the poll results indicate that expansion of the rail system, if sucessfully completed, would be unlikely to achieve its goal of  easing congestion, because______
A. most people in favor of expanding the rail system reported less congestion during their highway commute as the primary benefit they would experience
B of the less than 20 percent of residents not counted as favoring the expansion, about half claimed to have no opinion one way or the other
C the twice-daily periods of peak congestion caused by people commuting in cars have grown from about an hour each to almost two and a half hours each in the past 20 years
D expanding the commuter rail system will require the construction of dozens of miles of new railbed
E the proposed expansion to commuter rail system will make it possible for some people who both live and work at suurban locations to commute by rail.

好像大家都觉得应该选A，但是我对A的理解有点不一样，我觉得它说的是：“那些FAVOR扩建铁路的人作为高速公路的受益人声称更少的交通堵塞。”我认为如果这些人是在铁路扩建以后这样说的话，那不是证明扩建有用吗？因为那些开车的人说高速没有那么堵了呀！我不知道是不是我的理解不太正确，恳请指教！