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LSAT-15-4-19,LSAT-15-4-21,LSAT-15-4-22,LSAT-15-4-24,LSAT-15-4-25
[face=Georgia]19. When permits for the discharge of chemicals into a waterway are issued, they are issued in terms of the number of pounds each chemical that can be discharged into the waterway per day. These figures, calculated separately for each chemical for which a permit is issued, are based on an estimate of the effect of the dilution of the chemical by the amount of water flowing through the waterway. The waterway is therefore protected against being adversely affected by chemicals discharged under the permits.
The argument depends on the assumption that
(A) relatively harmless chemicals do not interact with each other in the water to form harmful compounds
(B) there is a swift flow of water in the waterway that ensures rapid dispersion of chemicals discharged
(C) those who receive the permits do not always discharge the entire quantity of chemicals that the permits allow
(D) the danger of chemical pollution of waterways is to be evaluated in terms of human health only and not in terms of the health of both human beings and wildlife
这个假设题目请大牛们重点讲解,A/B我的确是没有分开的我觉得两个都是假设.答案是A.
Monroe, despite his generally poor appetite, thoroughly enjoyed the three meals he ate at the Tip-Top Restaurant, but, unfortunately, after each meal he became ill. The first time he ate an extra-large sausage pizza with a side order of hot pepper: the second time he took full advantage of the all-you-can-eat fried shrimp and hot peppers special and the third time he had two of Tip-Top's giant meatball sandwiches with hot peppers. Since the only food all three meals had in common was the hot peppers. Monroe concludes that it is solely due to Tip-Top's hot peppers that he became ill.
21. If both Monroe's conclusion and the evidence on which he bases it are correct, they would provide the strongest support for which one of the following?
(A) Monroe can eat any of Tip-Top's daily all-you-can-eat specials without becoming ill as long as the special does not include the hot peppers.
(B) If, at his third meal at Tip-Top, Monroe had chosen to eat the baked chicken with hot peppers, he would have become ill after that meal.
(C) If the next time Monroe eats one of Tip-Top's extra-large sausage pizzas he does not have a side order of hot peppers, he will not become ill after his meal.
(D) Before eating Tip-Top's fried shrimp with hot peppers special, Monroe had eaten fried shrimp without suffering any ill effects.
(E) The only place Monroe has eaten hot peppers has been at Tip-Top.
答案是B,如何排除A/C.
22. "This company will not be training any more pilots in the foreseeable future, since we have 400 trained pilots on our waiting list who are seeking employment. The other five major companies each have roughly the same number of trained pilots on their waiting lists, and since the projected requirement of each company is for not many more than 100 additional pilots, there will be no shortage of personnel despite the current upswing in the aviation industry".
Which one of the following, if true, casts the most doubt on the accuracy of the above conclusion?
(A) Most of the trained pilots who are on awaiting list for a job are on the waiting lists of all the major companies
(B) In the long run, pilot training will become necessary to compensate for ordinary attrition.
(C) If no new pilots are trained, there will be an age imbalance in the pilot work force.
(D) The quoted personnel projections take account of the current upswing in the aviation industry.
(E) Some of the other major companies are still training pilots but with no presumption of subsequent employment.
这个题目答案是A,我觉得A是有关的但是加强,它是怎么削弱的?
In Peru, ancient disturbances in the dark surface material of a desert show up as light-colored lines that are the width of a footpath and stretch for long distances. One group of lines branching out like rays from a single point crosses over curved lines that form a very large bird figure. Interpreting the lines in the desert as landing strips for spaceship-traveling aliens, an investigator argues that they could hardly have been Inca roads, asking, "what use to the Inca would have been closely spaced roads that ran parallel? That intersected in a sunburst pattern? That came abruptly to an end in the middle of an uninhabited plain".
24. The argumentative strategy of the investigator quoted is to
(A) reject out of hand direct counterevidence to the investigator's own interpretation
(B) introduce evidence newly discovered by the investigator which discredits the alternative interpretation
(C) support one interpretation by calling into question the plausibility of the alternative interpretation
(D) challenge the investigative methods used by those who developed the alternative interpretation
(E) show that the two competing interpretations can be reconciled with one another
这个题目的CD两个选项我没有分开,答案是C.这个题目的原文我也没有读的太懂,能给解释一下吗?
25. For someone who interprets the lines as referring to astronomical phenomena, which one of the following, if true, most effectively counters an objection that the crossing of the straight-line pattern over the bird figure shows that the two kinds of line pattern served unrelated purposes?
(A) IN areas that were inhabited by ancient native North American peoples, arrangements of stones have been found that make places where sunlight falls precisely on the spring solstice, an astronomically determined date.
(B) The straight lines are consistent with sight lines to points on the horizon where particular astronomical events could have been observed at certain plausible dates, and the figure could represent a constellation.
(C) The straight-line pattern is part of a large connected complex of patterns of straight-line rays connecting certain points with one another.
(D) Native Central American cultures, such as that of the Maya, left behind elaborate astronomical calendars that were engraved on rocks.
(E) There is evidence that the bird figure was made well before the straight-line pattern.
题目没有太读懂,这个题目只能猜了,它还居然对了,答案是B.[/face]
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发表于 2003-5-19 22:39:00
