OG-171

[kenlo2006]

Hi Jeng-Cheng,

對不起我小插花一下
其實可以從文意看出來
A recent report determined that although only 3 percent....., 33 percent of vehicle ticketed...were equiped with them.

藍色表後面紅色的事實有強烈的關係, 所以 => 有裝雷達的人容易吃單

希望不會越幫越忙

另外附上我的思路:

就超速的可能性來說,用裝雷達的群組來概化吃單的群組

[A級垂耳兔]

scujean解的真好...一看就懂了....
頂一下!

[dibert8]

這題有個關鍵字: regularly
前提有 regularly, 才導致結論 regularly

(A) 相反
(C) (D) 比較像結論,而不是前提
(E) 無關

[vantreal]

我不會用取非，不過用了其他方法，解出
1.題幹寫到：thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them(雷達)→有裝雷達的人容易吃單
2.題目結論：drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than
are drivers who do not. →有裝雷達的人，容易超速
3.從有裝雷達的人容易吃單推論到有裝雷達的人，容易超速。有裝雷達的人→容易超速，中間少了一各連接點
4.連接點：(b) drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed. →有吃單的人,更容易超速
5.結論：有裝雷達的人，容易吃單→(b)有吃單的人,更容易超速

這個推論是合理的, 只是我和Jen-Cheng的疑問一樣.
1.題幹寫到：thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them-->
只是說33%吃單的人是有裝雷達的,
那不就表示67%吃單的人是沒有裝雷達的嗎?
如果就考慮這一句, 有裝雷達的人比較容易吃單, 不是不太合理嗎?

還是說要把前一句也考慮進去來比較.
a recent report determined that although only three percent of drivers on maryland highways equipped their vehicles with radar detectors,
3%的車主有裝雷達, 但33%吃單的人有裝雷達.

然後回到題目結論：drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than
are drivers who do not. →有裝雷達的人，容易超速

結合共通元素 (B)

[dibert8]

雖然吃罰單的人有 67% 沒裝雷達,但是 97% 的車是沒裝雷達的.和 3% 裝雷達的車佔 33% 的罰單比起來,裝雷達的車看起來是比較會超速喔!

[chris8888]

找assumption就是 :

選項取非, 如果不能跟作者的conclusion吻合, 那就是對的答案.

原因在於 :
作者必然是先假設一個前提是對的, 然後再做出這個結論, 反推就是說, 如果這個假設前提被推翻, 作者的結論將會站不住腳.

這就是假設題取非的作法.

[Huang Hsin-Yi]

看這樣多,我還是想問Ｄ為何不對?

[Kal-El]

1. Although only three percent 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.
雖然僅3%人有裝偵測器,但33%吃單的人中有裝. -->吃單人中相對多的比例有裝偵測器.(吃單人<--> 裝偵測器人)
(並無"有裝偵測器的人容易吃單"之意; 也可能是吃單人容易裝偵測器)

2. 題目結論: drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than
are drivers who do not. -->有裝偵測器的人,容易超速.(裝偵測器人--> 超速)

3. 此結論要成立, 必須有論點使"裝偵測器人"能連結至"超速". (裝偵測器人<--前提--> 吃單人--(B)--> 超速)

[ajama]

不好意思想請教各位高手幫忙解惑. 謝謝.

如果用取非的方法來看答案D的話,

D : 在這段時間, 很多車被開了超過一次的罰單
假設D不成立, 則為 : 在這段時間, 很多車被開了不超過一次的罰單
當D被weaken後, 就會影響到結論了吧.
如果很多車被開了不超過一次的罰單, 則表示二次被抓的機會很少, 亦即很少車子重覆超速被抓.
那不就跟結論的 ""裝測速器的車子愛超速"" 不符嗎?
按取非的觀點, 那D的選項應該是答案啊!

[訪客]

速解171. a recent report determined that although only three percent 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. clearly, 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 assumptions?

(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 more likely to exceed the speed limit regularly than are drivers who are not ticketed.

原文裡 事實: ticketed , detectors
結論: detectors, 超速
同樣的消掉
選ticketed 與超速產生關聯的選項(B)

考試時誰還真正推完才選阿