请教两道pp3上的逻辑题：）

星月多多

pp3review上的第25和26题，为何不能剪贴、复制呢，痛苦：）
25) Between 1975 and 1985,nursing-home occupancy rates averaged 87 percent of capacity,while admission rates remained constant,at an average of 95 percent and admissions per 1000 beds per year.Between 1985 and 1988,however,occupancy rates rose to an average of 92 percent of capacity, while admission rates declined to 81 per 1000 beds per year.
A.The average length of time nursing-home residents stayed in nursing homes increased between 1985 and 1988.
D.Nursing homes built prior to 1985 generally had fewer beds than did nursing homes built between 1985 and 1989.
我知道a是对的，但d为什么不对呢？因为床位少，所以虽然申请人减少了，但占有率还是增加了。是不是因为d不够严密？
26）A recent report determined that although only three percnt of drivers on Maryland highways equipped their vehicles with radar detectors,thirty_three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearing,drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularing than are drivers who do not.
  The conclusion drawn above depends on which of the following assumption？
  答案为Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not
能帮忙解释一下吗？谢谢了！
还有，请问，有没有可以不打一遍题目的方法？[em19][em26]

pgclt

25). D. is not as direct as A. More beds doesn't necessarily lead to higher PERCENTAGE of occupancy.
26) there was some good discussion about this CR a few weeks ago.  Try to search it in older sections.

星月多多

谢谢！可是，我找了半天没找到，你还能帮忙告诉我大致的时间，也方便我找，谢谢哦！

tongxun

26、关键在于提干中的more likely to exceed 。凭什么这么说人家？不就是占超速者中的30%吗？回答：还有很多没逮住。

星月多多

哦，明白了！！！
真是太太太……感谢你了，tongxun：）

星月多多

再问：A recent report determined that although only three percnt of drivers on Maryland highways equipped their vehicles with radar detectors,thirty_three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearing,drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumption？
为什么这道题在og上（第171题）的答案是Bribers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.而不是pp3review上的A呢？？？？？

范进

我选OG 上的这个答案。因为将它推翻，则整个推理将不成立。

星月多多

范进兄，能解释一下吗？谢谢：）

zyh79

从论据只能推出：安装装置比没装置更容易因超速罚款
结论：安装装置比没装置更容易超速。
假设：超速罚款比没罚款的更容易超速（架桥）

星月多多

明白了，谢谢zyh79，关键是要注意它名词的转换：）