Lsat-12-2-18,Lsat-12-2-22. 谢谢！

BetterMan

T12 II 18,22
22题以前有解答，看了没懂。
18．The format of network television news programs generally allows advocates of a point of view only 30 seconds to convey their message. Consequently, regular watchers become accustomed to thinking of issues in terms only of slogans and catch phrases, and so the expectation of careful discussion of public issues gradually disappears from their awareness. The format of newspaper stories, on the other hand, leads readers to pursue details of stories headed by the most important facts and so has the opposite effect on regular readers—that of maintaining the expectation of careful discussion of public issues. Therefore, in contrast to regular newspaper reading, regular watching of network television news programs increases the tendency to think of public issues in oversimplified terms.
18. The argument assumes which one of the following?
(A) Viewers of network television news programs would be interested in seeing advocates of opposing views present their positions at length.
(B) Since it is not possible to present striking images that would symbolize events for viewers, and since images hold sway over words in television, television must oversimplify.
(C) It is not possible for television to present public issues in a way that allows for the nuanced presentation of diverse views and a good-faith interchange between advocates of opposing views.
(D) In network television news reports, it is not usual for a reporter to offer additional factual evidence and background information to develop a story in which opposing views are presented briefly by their advocates.
(E) Television news reporters introduce more of their own biases into news stories than do newspaper reporters.
理解：
C也可以说对，但语气太绝对。对C取非并不能保证原结论不成立。因为不可能的反面，只要有一个反例就可以了。但还是少数，也许还是导致了原理的tendency。
原题目是说tendency，并非绝对；所以D的not usual正好符合。
是这么样理解？

22. Oil company representative: We spent more money on cleaning the otters affected by our recent oil spill than has been spent on any previous marine mammal rescue project. This shows our concern for the environment.
Environmentalist: You have no such concern. Your real concern is evident in your admission to the press that news photographs of oil-covered otters would be particularly damaging to your public image, which plays an important role in your level of sales.
The environmentalist's conclusion would be properly drawn if it were true that the
(A) oil company cannot have more than one motive for cleaning the otters affected by the oil spill
(B) otter population in the area of the oil spill could not have survived without the cleaning project
(C) oil company has always shown a high regard for its profits in choosing its courses of action
(D) government would have spent the money to clean the otters if the oil company had not agreed to do it
(E) oil company's efforts toward cleaning the affected otters have been more successful than have such efforts in previous projects to clean up oil spills
答案是A。why？

以前的一个解释如下：
“题目问的是假设，即必要条件，不是充分条件。如果A不成立，环境雪茄的推理不可能正确。C仅是前提的改写，未能提供假设。”
A成立即“石油公司只有一个动机这么做”就可以推出“石油公司清洗otter只是为了自己的形象”这个结论吗？

这种问法“would be properly drawn if it were true that”是问必要条件还是充分？觉得该是充分条件。如果是问必要条件的话该是“。。。only if… were true…”。

[此贴子已经被作者于2004-10-22 10:31:21编辑过]

albert

1. "not possible" is incorrect..the passage is talking about the usualness but not possibility.

2. yes. I think it is a sufficient condition..But in this question, it is a type of "SUPPORT" question..

BetterMan

以下是引用albert在2003-8-23 22:03:00的发言：
2. yes. I think it is a sufficient condition..But in this question, it is a type of "SUPPORT" question..

Thanks again.! But still have some problem.
1）”support“型是指哪个选项成立对原结论有最大的支持，但可以不充分，是这个意思吗？

2）既便这么理解，我还是看不出来说”石油公司直可能有一个目的去清洗otter“，就可以支持说”他们这么做一定是为了自身利益“这个结论吗？
是不是说有个缺省理解是”石油公司做任何事情其中一个目的一定是为了自己的利益？“，可这个意思我在原文中看不出来。
again!

albert

let's look at what environmentalist said:

You have no such concern.
(this is conclusion)

Your real concern is evident in your admission to the press that news photographs of oil-covered otters would be particularly damaging to your public image, which plays an important role in your level of sales.
(this is evidence)

we notice that there is a GAP between evidence and conclusion...evidence is saying they are concering other factor...conclusion is saying that they don't have such concern...

to draw the conclusion safely, we have to add choice A as one addition information....

BetterMan

Many Thanks. I got it this time!

开始做的时候，一直没有把环境学家说得 “Your real concern....”也当作一个条件来判断，还在想这个evidence是怎么得到的呢？ ：）