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[求助][讨论]几道逻辑题求教!
都是过去ets的老题....解题思路不懂.....求教!
LUXIN CRITICAL REASONING LOOSE-LEAFING
30.Corporate officer: Last year was an unusually poor one for our chemical division, which ahs traditionally contributed about 60 percent of the corporation’s profits. It is therefore encouraging that there is the following evidence that the pharmaceutical division is growing stronger: it contributed 45 percent of the corporation’s profits, up from 20 percent the previous year.
On the basis of the facts stated, which of the following is the best critique of the evidence presented above?
(A)The increase in the pharmaceutical division’s contribution to corporation profits could have resulted largely from the introduction of a single, important new product.
(B)In multidivisional corporations that have pharmaceutical divisions, over half of the corporation’s profits usually comes from pharmaceuticals.
(C)The percentage of the corporation’s profits attributable to the pharmaceutical division could have increased even if that division’s performance had not improved.
(D)The information cited does not make it possible to determine whether the 20 percent share of profits cited was itself an improvement over the year before.
(E)The information cited does not make it possible to compare the performance of the chemical and pharmaceutical divisions in terms of the percent of total profits attributable to each.
A):C
31.Less than 50 percent of a certain tropical country’s wildlands remains intact. Efforts are under way to restore biological diversity in that country by restoring some destroyed wild habits and extending some relatively intact portions of forests. However, opponents argue that these efforts are not needed because there is still plenty of wildland left.
Which of the following, if true, most significantly weakens the argument of the opponents of conservation efforts?
(A)As much, if not more, effort is required to restore a wild habitat as to preserve an intact habitat.
(B)The opponents of restoration efforts are, for the most part, members of the wealthier classes in their own villages and cities.
(C)Existing conservation laws have been very effective in preserving biological diversity within the wildlands that remain intact.
(D)For many tropical species native to that country, the tropical wildlands that are still relatively intact do not provide appropriate habitats for reproduction.
(E)If a suitable population of plants and animals is introduced and is permitted to disperse and grow, tropical habitats can most certainly be restored.
A)
32.Every discovery in modern physics has been stated in terms of sophisticated mathematical concepts. But such concepts are simply devices created by the human mind to manipulate experience; they cannot duplicate reality. Thus, modern physics is merely an ingenious set of fictions, and as such it cannot provide an insight into the way the world works.
Which of the following is the strongest argument against the position taken in the passage above?
(A)There is no reason to state that the human mind should not attempt to manipulate experience.
(B)There is no reason to state that fictions cannot provide in sight into reality.
(C)The same dependence on mathematics is found in biochemistry as in physics.
(D)Ancient physics did not employ sophisticated mathematics.
(E)Mathematics is not supposed to duplicate reality but should be pursued for its own sake.
A):B
33.Nursing homes range from 3 to 5 stories in height. If a nursing-home room is above 1st floor, it has a fire escape.
If the statement above are true, which of the following must also be true?
(A)1st floor rooms in nursing homes do not have fire escapes.
(B)Fire escapes are allowed but not required for 1st floor rooms in nursing homes.
(C)Some nursing homes have no fire escapes.
(D)Not all nursing homes have proper fire escapes.
(E)2nd rooms in nursing homes have fire escapes.
A):E
34.Each of the academic journals THOUGHT and ERGO has a review committee to prevent misattributed quotations from appearing in its published articles. Nevertheless, about 10 percent of the quotations in THOUGHT’s published articles are misattributed, whereas ERGO contains no misattributions. ERGO’s committee is more effective, therefore, than THOUGHT’s at finding misattributed quotations.
The argument above assumes that
(A)most of the articles submitted to THOUGHT for publication contain misattributed quotations
(B)there are at least some misattributed quotations in articles submitted to ERGO for publication
(C)the members of ERGO’s committee are, on the whole, more knowledgeable than are the members of THOUGHT’s committee.
(D)the number of misattributed quotations ina journal is an accurate measure of how carefully that journal is edited.
(E)the authors who submit articles to ERGO for publication are more thorough in attributing quotations than are the authors who submit articles to THOUGHT.
A):B
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发表于 2003-7-8 01:21:00
