标题: GWD上2题请教 [打印本页] 作者: Douzizi 时间: 2010-9-1 16:05 标题: GWD上2题请教 1. In each of the past five years, Barraland’s prison population has increased. Yet, according to official government statistics, for none of those years has there been either an increase in the number of criminal cases brought to trial, or an increase in the rate at which convictions have been obtained. Clearly, therefore, the percentage of people convicted of crimes who are being given prison sentences is on the increase. (C) 主要是C的意思不大懂，什么叫"imposing longer minimum sentences for those crimes for which a prison sentence had long been mandatory"? Which of the following, if true, most seriously weakens the argument?
A. In Barraland the range of punishments that can be imposed instead of a prison sentence is wide. B. Over the last ten years, overcrowding in the prisons of Barraland has essentially been eliminated as a result of an ambitious program of prison construction. C. Ten years ago, Barraland reformed its criminal justice system, imposing longer minimum sentences for those crimes for which a prison sentence had long been mandatory. D. Barraland has been supervising convicts on parole more closely in recent years, with the result that parole violations have become significantly less frequent. E. The number of people in Barraland who feel that crime is on the increase is significantly greater now than it was five years ago.
2. Fact: Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.
Fact: Over 95 percent of people who have asthma also suffer from hay fever. (E) 好象在做数学，不过还是理解不出来。。。 If the information given as facts above is true, which of the following must also be true?E A A. Hay fever is a prerequisite for the development of asthma. B. Asthma is a prerequisite for the development of hay fever. C. Those who have neither hay fever nor asthma comprise less than 5 percent of the total population. D. The number of people who have both of these ailments is greater than the number of people who have only one of them. E. The percentage of people suffering from hay fever who also have asthma is lower than 95 percent
谢谢！作者: 花子落落 时间: 2010-9-2 04:19
第一题C是说增加了最小监狱时间。大家在监狱的时间都变长了。作者: 花子落落 时间: 2010-9-2 04:22
第二题，假设一群病人中有X人得了A，Y人得了Fever。 有X<Y,95%X人是既有A又有F， 那么The percentage of people suffering from hay fever who also have asthma就是(95%X)/Y,因为X<Y,所以小于95%。作者: Douzizi 时间: 2010-9-2 19:22
还是好纠结哦，特别是第2题。哎。。。逻辑真纠结，还需更努力啊~~~