lushannon

where is z_weining's “有关无关”的解题方法. thanks

bob

LSAT TEST1 SECTION1 NO。17，答案是A，我选的是B。关键是从题目中，没办法看出A中所谓的rob the human race
17. The peculiar evil of silencing the expression of an opinion is that it robs the human race. It takes from posterity, as well as the existing generation, and from those who dissent from the opinion even more than from those who hold it. If the opinion is right, they are deprived of the opportunity of exchanging error for truth; if it is wrong, they lose what is almost as great a benefit: the clearer perception and livelier impression of truth, produced by its collision with error.
Which one of the following best expresses the conclusion presented in the argument?
(A) Silencing the expression of an opinion is robbing the human race.
(B) Silencing the expression of an opinion harms those who dissent more than those who agree.
(C) Anyone who agrees with an opinion would not want to silence its expression.
(D) Gaining a clearer perception and livelier impression of truth is a great benefit.
(E) The greatest benefit is the opportunity of exchanging truth for error.

TEST1 SECTION4 NO。18，答案是E，我选的是D。题目就不太懂。
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.
18. If the author’s argument were challenged on the grounds that the construction of buildings has adverse effects on the natural environment, which of the following replies might the author use to respond to the challenge logically?
(A) There are human activities, such as making music, that are environmentally harmless.
(B) Harming the environment is not an end, of purpose, of the arts of life.
(C) The construction could involve the use of natural, not artificial, materials.
(D) Constructing buildings is not an “art of life.”
(E) Even if the natural environment is disturbed by the construction of buildings, it is improved for human use.

NO。22，答案是A，我选的是C。也是题目不懂。
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

XDJM们，我100分钟做了一个SECTION（26题），错了9题，我这个水平考GMAT是不是死定了？？？
唉，求大家给点指导，在下不胜感激。！！！！！！！！！！！！！

zyh79

阿狼：我觉得逻辑提高过程很重要的一点就在于做完后的总结，将错题弄懂，磨刀不误砍材工啊
另外，电子版的LSAT在本站就有下载，LSAT上册17套，做完后在逻辑和阅读两方面都会有很大的提高，我会在近期将LSAT已讨论的题做一系统整理，谢谢大家！

阿狼

我想问一下大家，关于LSAT的做题时间和批改时间的比例如何确定为好？我总觉得不论是做GMAT还是做LSAT，批改的时间远较做题时间为多。浪费啊浪费。大家的时间是怎么安排的呢？

stsww

the choice of A compares the proportion the two kinds of comedians. According to the passage, the proportion of the best comedians who had unhappy childhood is 1 because all of the best guys have had unhappy childhoods. So choice of A is right.

rhou88

请问哪里可以下载到LAST题？ 我看到论坛中说17个sections.但是我找不到这些题。

christinecc

Test 2 section II
11. “If the forest continues to disappear at its present pace, the koala will approach extinction,” said the biologist.
“So all that is needed to save the koala is to stop deforestation,” said the politician.
Which one of the following statements is consistent with the biologist’s claim but not with the politician’s claim?
(A) Deforestation continues and the koala becomes extinct.
(B) Deforestation is stopped and the koala becomes extinct.
(C) Reforestation begins and the koala survives.
(D) Deforestation is slowed and the koala survives.
(E) Deforestation is slowed and the koala approaches extinction.
我选D,但答案是B，想不明白？

mingja

I think the answer is A.

From Stem, If D, then E (biologist)


From A: Deforestation continues and the koala becomes extinct
i.e. If D, then E

From Stem: Politician:  if ~D, then ~E which is closer to

(C) Reforestation begins and the koala survives.
(D) Deforestation is slowed and the koala survives. (if S,then ~E;assuming S=~D)

Whereas
B and D is not mentioned in the stem:

(B) Deforestation is stopped and the koala becomes extinct.
If ~D,then E
(D) Deforestation is slowed and the koala survives.

If S, then E

Even if S is eqivalent to ~D, If ~D, then E is still not consistent with the biologist

zyh79

lsat13－－2CR--19:
J：A==>B,
A：非A==>非B。
alan犯的逻辑错误在于：
否定了论证中的论据并不意味着该论据推导的结论一定也是错的。选B

Jean

斑竹同志，我想提一个请求。可不可以将此专刊每个星期整理一下，以文本格式可以下载下来。里面标注题目和针对此题的所有讨论。这样我们后来者就不会看得那么辛苦了。