i ll take the test 31oct in bj（3rd time) 希望在北京的朋友一起交流：）
madeleinerao[在] yahoo.com 作者: ninishine 时间: 2003-10-12 01:11
thank you for offering help. I have a problem to discuss. . Most parents who are generous are good parents, but some self-centered parents are also good parents. Yet all good parents share one characteristic; they are good listeners. If all of the statements in the passage are true, which one of the following must also be true? (A) All parents who are good listeners are good parents. (B) Some parents who are good listeners are not good parent. (C) Most parents who are good listeners are generous. (D) Some parents who are good listeners are self-centered (E) Fewer self-centered parents than generous parents are good listeners.
the answer is D. but I'm confused and don't know why. could you please show me how whould you think about this kind of question? thank you very much!作者: greandgmat 时间: 2003-10-13 16:55
着是一个充分必要条件的提 只要知道一个命题的逆否等于 他 的 原命题就可以了 很简单的 ：） 作者: lilyhuang 时间: 2003-10-15 15:00
Sec 4 ( III) 12. The number of North American children who are obese- that is who have more body fat than do 85 percent of North American children their age - is steadily increasing, according to four major studies conducted over the past 15 year.
If the finding reported above is correct, it can be properly concluded that (A) when four major studies all produce similar results, those studies must be accuraate. (B) North American children have been prograssively less physically active over the past 15 years. (C) The number of North American children who are not obese increased over the past 15 year. (D) Over the past 15 years, the number of North American children who are underweight has declined. (E) The incidence of obosity in North American children tends to increase as the children grow older.
A，B，D，E有很明显的错误. 无论如何不明白C为什么是对的, 脑子好象糊涂了. Can you give me some tips? Many thanks.作者: greandgmat 时间: 2003-10-15 18:21
这是一个数学问题 纯粹计算： 胖的人增多了。胖的人=85% *总人数 瘦的人 =25% *总人数 胖子 多了说明 总人数 多了 总人数多了 推出 瘦人多了 作者: greandgmat 时间: 2003-10-15 18:23
to ninishine 那种题画韦恩图最快 作者: lilyhuang 时间: 2003-10-16 11:05
Thank u.作者: greandgmat 时间: 2003-10-16 21:08
to lilyhuang do you see what i mean in the explaination?do you agree ? you are very welcom作者: lilyhuang 时间: 2003-10-17 10:23
"that is who have more body fat than do 85 percent of North American children their age" D) Over the past 15 years, the number of North American children who are underweight has declined.
Sorry, i didn't carefully check the answer in a hurry yesterday. But in D choice, it means that the number of...... has declined, not"increased". On the other hand, the children described in the paragraph should be divided into three categories: children who are obese, children who are at normal weight, children who are underweight. I really don't know how to reason to get D choice???作者: antoine 时间: 2003-10-17 11:26
请教这位大牛一题,应该对你来说是很简单的.
22. It is illogical to infer a second and different effect from a cause which is known only by one particular effect. This is incorrect because the inferred effect must necessarily be produced by some different characteristic of the cause than is the observed effect, which already serves entirely to describe the cause.
Which one of the following arguments makes the same logical error as the one described by the author in the passage?
(A) An anonymous donor gave a thousand dollars to our historical society. I would guess that that individual also volunteers at the children’s hospital.
(B) The radioactive material caused a genetic mutation, which, in turn, caused the birth defect. Therefore, the radioactive material caused the birth defect.
(C) The tiny, unseen atom is the source of immense power. It must be its highly complex structure that produces this power.
(D) The city orchestra received more funds from the local government this year than ever before. Clearly this administration is more civic-minded than previous ones.
(E) If I heat water, which is a liquid, it evaporates. If I heat hundreds of other liquids like water, they evaporate. Therefore, if I heat any liquid like water, it will evaporate作者: jerry8849 时间: 2003-10-17 14:58
怎么和你联系呢?我也在北京!e-MAIL:jerry8849(A) hotmail.com作者: greandgmat 时间: 2003-10-18 17:11
to jerry 8849 我们写邮件吧？ 我大四，金融专业 你呢？作者: greandgmat 时间: 2003-10-18 17:14
to lily D说瘦子下降了推不出啊 我的那个对C的分析你看懂了吗？ 作者: greandgmat 时间: 2003-10-18 17:16
to antoine逻辑相似题GMAT 不考的 LSAT 中主要注意WEAKEN ，ASSUMPTION ，SUPPORT 之类就够了作者: greandgmat 时间: 2003-10-18 17:28
TO aeroplane ：！！！
lsat 1－4：if the artificial is not better than the natural, to what end are all the arts of life? to dig, to plow, to build, to wear clothes—all are direct violations of the injunction to follow nature. assumption：(c) digging, plowing, building, and wearing clothes are better than nature. 题干那句话我还是读不懂to what end are all the arts of life？到底是什么意思，我认为是做这道题的关键。查了字典，end可能与本题相关的解释有三种：1）something toward which one strives; a goal.目的朝着一个事物努力；目标see: intention2）a result; an outcome.结果；后果3）the ultimate extent; the very limit:极限；最大限度：the end of one's patience.耐心的极限。我觉得用哪个解释都不太明确原句的本意，可能是因为它是个省略后的问句的关系吧，各位大牛版主们，谁能具体的解释下end这个词和这句话呢？
这道题的意思是： 如果说人工不如自然，那么艺术（艺术 就是人工创造 ）还有什么意义？！to dig, to plow, to build, to wear clothes（这些都是ARTS OF LIFE）都是对自然的破坏。那么既然这些都是对自然的破坏，岂不都没有意义了？ 假设就是作者 认为to dig, to plow, to build, to wear clothes比自然好。因为作者认为它们实际上都 是有意义 的 。作者: lilyhuang 时间: 2003-10-20 12:04
to greandgmat:
Sorry, i made a mistake. I had thought that the right answer is D and don't really know how i checked the answer that day!!! Anyway, thank u very much! Hope that it didn't take much of ur time.
