请教LSAT-15-II-21,24

joywzy

21. In response to high mortality in area hospitals, surgery was restricted to emergency procedures during a five-week period. Mortality in these hospitals was found to have fallen by nearly one-third during the period. The number of deaths rose again when elective surgery (surgery that can be postponed) was resumed. It can be concluded that ,before the five --week period, the risks of elective surgery had been incurred unnecessarily often in the area.

Which one of the following, if true, most seriously undermines the conclusion above?

(A) The conclusions for which elective surgery was performed would in the long run have been life-threatening, and surgery for them would have become riskier with time.

(B) The physicians planning elective surgery performed before the five-week period had fully informed the patients who would undergo it of the possible risks of the procedures.

(C) Before the suspension of elective surgery, surgical operations were performed in area hospitals at a higher rate, per thousand residents of the area, than was usual elsewhere.

(D) Elective surgery is, in general, less risky than is emergency surgery because the conditions requiring or indicating surgery are often less severe.

(E) Even if a surgical procedure is successful, the patient can die of a hospital-contracted infection with a bacterium that is resistant to antibiotic treatment.

答案:A,D为何不好?

24. Between 1951 and 1963, it was illegal in the country of Geronia to manufacture, sell, or transport any alcoholic beverages. Despite this prohibition, however, the death rate form diseases during the first five years of the period than it was during the five years prior to 1951. Therefore, the attempt to prevent alcohol use merely make people want and use alcohol more than they would have it had not been forbidden.

Each of the following, if true, weakens the argument EXCEPT:

(A) Death form an alcohol-related disease generally does not occur until five to ten years after the onset of excessive alcohol consumption.

(B) The diseases that can be caused by excessive alcohol consumption can also be caused by other kinds of behavior that increased between 1951 and 1963.

(C) The death rate resulting from alcohol-related diseases increase just as sharply during the ten years before and the ten years after the prohibition of alcohol as it did during the years of prohibition.

(D) Many who died of alcohol-related diseases between 1951 and 1963 consumed illegally imported alcoholic beverages produced by the same methods as those used within Geronia.

(E) Between 1951 and 1963, among the people with preexisting alcohol-related diseases, the percentage who obtained lifesaving medical attention declined because of a social stigma attached to excessive alcohol consumption.

答案,不明白.

谢谢.

albert

今天做最后一套15题。。做完我就跟LSAT说BYEBYE罗。。

albert

21 结论是： the risks of elective surgery had been incurred unnecessarily often in the area.

首先这里讨论的是某个地区的，D in gerneral是这样。。不更说明了risks of elective surgery 是不必要的吗？

24
原文：因为戒酒法律执行期间，因为VIRUS而引起的DEATH上升。
所以戒酒法律引起更多人喝酒
现象解释Weaken的方式：
A之前引起的，有潜伏期(别的解释)
B 可能别的原因引起的（他因）
C 法律执行前后和期间死亡增长一样猛（通过比较，切断法律和死亡增长的关系）
E之前有病的人，期间因为医治的少了导致死亡（他因）
D无法削弱


BTW,刚做完。。发现这套题TYPING MISTAKE太多了，而且有些题简直是滑稽。。比如25题目，需要由名字知道性别。。。我是看了答案才能倒推出来的。。。ETS怎么会这么幼稚？？开始对LSAT有些怀疑，还好也做完了。。否则我真的懒得做下去了。

mike1999

以下是引用albert在2003-6-27 21:30:00的发言：
今天做最后一套15题。。做完我就跟LSAT说BYEBYE罗。。

羡慕啊，我还有七八套！！

joywzy

以下是引用albert在2003-6-28 10:53:00的发言：
21 结论是： the risks of elective surgery had been incurred unnecessarily often in the area.

首先这里讨论的是某个地区的，D in gerneral是这样。。不更说明了risks of elective surgery 是不必要的吗？

albert,D怎么是in general ， A也是in general ?能不能再讲讲。谢谢先。

zhaoyu533

不好意思，请问LSAT也有好多种吗？为什么我下的就找不到上面提到的题目呢？我的也是从下载区下的，共28套，每套两个逻辑，一个阅读联系。逻辑在24-26题不等，要求在35分钟做完，请问我是不是下错了？还是什么原因题号对不上？

mike1999

对阿，我们用的就是这个。没错。

zhaoyu533

谢谢,我再查查看

[此贴子已经被作者于2003-7-2 23:09:40编辑过]