18. Professor Hartley's new book on moral philosophy contains numerous passages that can be found verbatim in an earlier published work by Hartley's colleague, Professor Lawrence. Therefore in view of the fact that these passages were unattributed in Hartley's book. Hartley has been dishonest in not acknowledging the intellectual debt owed to Lawrence.
Which one of the following is an assumption on which the argument is based?
(A) Hartley could not have written the new book without the passages in question.
(B) While writing the new book, Hartley had access to the manuscript of Lawrence s book.
(C) A book on moral philosophy should contain only material representing the author's own convictions.
(D) Lawrence did not get the ideas in the passages in Question or did not get their formulations originally from Hartley.
(E) Hartley considered the passages in question to be the best possible expressions of the ideas they contain.
答案：D，我选了C，请问D是什么意思，为什么是假设呢？
Questions 22-23
Doctors in Britain have long suspected that patients who wear tinted eyeglasses are abnormally prone to depression and hypochondria. Psychological tests given there to hospital patients admitted for physical complaints like heart pain and digestive distress confirmed such a relationship. Perhaps people whose relationship to the world is psychologically painful choose such glasses to reduce visual stimulation, which is perceived as irritating. At any rate, it can be concluded that when such glasses are worn, it is because the wearer has a tendency to be depressed or hypochondriacal
22. The argument assumes which one of the following?
(A) Depression is not caused in some cases by an organic condition of the body.
(B) Wearers do not think of the tinted glasses as a means of distancing themselves from ocher people.
(C) Depression can have many causes, including actual conditions about which it is reasonable for anyone to be depressed.
(D) For hypochondriacs wearing tinted glasses, the glasses serve as a visual signal to others that the wearer's health is delicate.
(E) The tinting does not dim light to the eye enough to depress the wearer's mood substantially.
答案：E，我选了B，B是排除他因。
23. Each of the following, if true, weakens the argument EXCEPT:
(A) Some people wear tinted glasses not because they choose to do so but because a medical condition of their eyes forces them to do so.
(B) Even a depressed or hypochondriacal person can have valid medical complaints, so a doctor should perform all the usual objective tests in diagnosing such persons.
(C) The confirmatory tests were not done for places such as western North America where the usual quality of light differs from that prevailing in Britain.
(D) Fashions with respect to wearing tinted glasses differ in different parts of the world.
(E) At the hospitals where the tests were given, patients who were admitted for conditions less ambiguous than heart pain or digestive distress did not show the relationship between tinted glasses and depression or hypochondria.
所有的assumption都可以取非而对推理进行最大的减弱。 18）对D取非。如果Lawrence 是从Hartley得到 ideas or formulations originally，如何可以断 定Hartley是不诚实？！在LSAT中should和绝对的判断不是assumption（我只是说一般,pay more attention to 'only,must....'）。
22）E 如果是因为色彩不调和 depress the wearer's mood。那么就不能是因为weare有沮丧的倾向而戴glasses 来depress the wearer's mood，所以结论不能成立。B 只是戴眼镜的人不是因为.......而拉远与他人的距离，与心情无关。
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发表于 2003-6-1 17:51:00
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