请教：OG12 CR Q78 Q124

littlechina

Q78.

A recent report determined that although only 3 percent of drivers on Maryland highways equipment their vehicles with radar detectors, 33 percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detecters are more likely to exceed the speed limit regularly than are drivers who do not.

the conclusion drawn above depends on which of the assumotions?

A 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.

B Drivers who are ticketed for exceeding the speed limit are likely to exceed the speed limit reguarly than are drivers who are not ticketed.

C The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.

D Many of the vehicels that were ticketed for exceeding the speed limit wre located more than once in the time period covered by the report.

E Drivers on Maryland highways exceeded the speed limit more often than diDd drivers on other state highways not covered in the report

答案是B，我能排除D和E，ABC就很纠结，请帮忙点拨

124. Museums that house Renaissance oil paintings typically store them in enviroments that are carefully kept within narrow margins of temperature and humidity to inhibit any deterioration. Laboratory tests have shown that the kind of oil paint used in these paintings actually adjusts to climatic changes quite well. If, as some museum directors believe, paint is the most sensitive substance in these works, then by relaxing the standards to temperature and humidity control, musuums can reduce energy costs without risking damage to these paintings. Museums would be rash to relax those standards, however, since results of preliminary tests indicate that gesso, a compound routinely used by Renaissance artists to help paint adhere to canvas, is unable to withstand significant variations in humidity.

in the argument above, the two portions in boldface play which of the following roles?

A The first is an objection that has been raised against the position taken by the argument, the second is the position taken by the argument.

B The first is an position taken by the argument, the second is the position that the argument calls into question

C The first is a judgement that  has been offered in support of the position that the argument calls into question; the second is a circumstance on which that judgment is, in part, based

D The first is a judgement that  has been offered in support of the position that the argument calls into question;  the second is that position

E The first is a claim that the argument calls into question; the second is the position taken by the argument

答案是D，想了好久，看了解释也不太明白为啥选这个，拜托了~~~~~~~

littlechina

为啥没人理啊，难道大家都不会做吗。。。

我在论坛里搜了搜，也没看到有人讨论这两道题，看来买OG12真是个败笔，讨论太少了

sunlight841206

Q78
题目中内容：
现象：
1）3%汽车安装了雷达探测系统；
2）在超速罚单中，33%的汽车是安装了雷达探测系统；
结论：
一般来说，装了雷达探测系统的车更可能超速；
问题的内容：
给个assumption来得到结论？
推理分析：
如果是正常情况（分配均衡），3%的车辆安装雷达探测系统，那么在超车罚单中也应该只有3%的车辆安装了雷达探测系统。
而现在的实际情况是，在超速罚单中有33%的车辆安装了雷达探测系统。
那么说明，在超速罚单中，安装了雷达探测系统的车辆数目超出了正常水平，他们更可能得到超速罚单。
还要注意：超车被罚款，超车，两者不同等同。
答案分析：
A:安装了雷达探测系统的车不太容易因为超速而被开罚单。==>这里只说明了“超速罚单的问题”，自问一句这跟“超车”是同一问题么？好似不是同一个概念哦！
B:因超速而被罚款的驾驶员比起不被罚款的驾驶员更可能超速。==>这里就刚好就“超速罚单”与“超速”问题联系到一起了~~
C:因超速而被罚款的驾驶员比安装雷达探测系统的驾驶员多。==>错误的，安装雷达探测系统的车辆占总车辆的3%，因超速而被罚款的车辆的数目在这里没有提及，两者之间无法比较。而且跟题目中的问题也无关。

sunlight841206

同志，请不要急躁~别人跟你讨论问题，不是别人的公民义务。
还有OG是好东西，不要随便说话，误导其他刚刚准备GMAT的人。

sunlight841206

Q124:
题目内容：
1）Laboratory证明油画上面的oil是能适应climatic changes的。
2）若像museum directors相信的那样，“paint is the most sensitive substance in these works”，那么museum就可以通过放宽温湿度控制，从而“museums can reduce energy costs without risking damage to these paintings.”
3）但是：以上的结论是盲目的。因为粘合paint到画布上的化合物对湿度变化要求很高的。
逻辑分析：
1、两个boldface在一个句子中，而且是“因为，所以”的关系；
2、而这“两个boldface”所提出来的看法，在整个题目分析过程中，却是要被question的！

littlechina

同志，请不要急躁~别人跟你讨论问题，不是别人的公民义务。
还有OG是好东西，不要随便说话，误导其他刚刚准备GMAT的人。

-- by 会员 sunlight841206 (2010/1/14 14:13:24)

好的，我错了，不该乱说话

不过，我只是客观陈述一个事实啦，OG确实好东西，这没得说

littlechina

这个没想到，谢谢提醒

Q78
如果是正常情况（分配均衡），3%的车辆安装雷达探测系统，那么在超车罚单中也应该只有3%的车辆安装了雷达探测系统。
而现在的实际情况是，在超速罚单中有33%的车辆安装了雷达探测系统。
那么说明，在超速罚单中，安装了雷达探测系统的车辆数目超出了正常水平，他们更可能得到超速罚单。
还要注意：超车被罚款，超车，两者不同等同。
-- by 会员 sunlight841206 (2010/1/14 14:10:34)

littlechina

弱弱地问一句，museums can reduce energy costs without risking damage to these paintings是要被质疑的，这个我理解。可是，如果museum directors相信paint is the most sensitive substance in these works”，

most senstive 是不是意味着应该小心呢，这正是作者要支持的意思啊~~

Q124:
题目内容：
1）Laboratory证明油画上面的oil是能适应climatic changes的。
2）若像museum directors相信的那样，“paint is the most sensitive substance in these works”，那么museum就可以通过放宽温湿度控制，从而“museums can reduce energy costs without risking damage to these paintings.”

-- by 会员 sunlight841206 (2010/1/14 14:42:13)

littlechina

我已经明白了，不能自己瞎想，谢谢CD

弱弱地问一句，museums can reduce energy costs without risking damage to these paintings是要被质疑的，这个我理解。可是，如果museum directors相信paint is the most sensitive substance in these works”，

most senstive 是不是意味着应该小心呢，这正是作者要支持的意思啊~~

Q124:
题目内容：
1）Laboratory证明油画上面的oil是能适应climatic changes的。
2）若像museum directors相信的那样，“paint is the most sensitive substance in these works”，那么museum就可以通过放宽温湿度控制，从而“museums can reduce energy costs without risking damage to these paintings.”

-- by 会员 sunlight841206 (2010/1/14 14:42:13)

-- by 会员 littlechina (2010/1/14 14:56:08)

0225xj

刚看到这个帖子，自己也想呢，不过想明白了，其实是题目给的是装雷达与罚单之间的关系，结论是装雷达与超速的关系，如果说装雷达是A，超速是C，开罚单是B，那么按照三段论，是A-->B,结论是A--->C，假设就应该讨论B与C的关系~~
这样解答对吗~~