GMAT CR 題裡面的充分假設（說服力強）

掌握 GMAT CR 充分假設題技巧：如何判斷邏輯題的「跳躍概念」？

在 GMAT CR 充分假設題技巧中，首先你必須抓到結論句（相信結論句怎麼抓應該是眾版友必備能力）。理解結論句如何呈現 premise 中沒有提到的新概念，是判斷「跳躍概念」的關鍵。

For example:

他家很有錢，所以他一定不會貪汙。

「貪汙」是Premise中沒有提到過，而結論才出現的概念，所以結論要成立，必須要把「貪汙」跟「家裡有錢」連結在一起。這正是 GMAT 考試中常見的邏輯跳躍。故 assumption：很有錢的人一定不會貪汙。

再舉一例：

Premise：P是醫生
Conclusion：P不適合當市長

「市長」是premise沒提到，在結論才出現的概念，那就要去把「市長」跟premise已有的概念「醫生」結合在一起。這類型的題目，在 GMAT Focus Edition 中也佔有重要地位。故assumption：作醫生的人不適合當市長。

OG2016 新題範例

41. Although there is no record of poet Edmund Spenser’s parentage, we do know that as a youth Spenser attended the Merchant Tailors’ School in London for a period between 1560 and 1570. Records from this time indicate that the Merchant Tailors’ Guild then had only three members named Spenser: Robert Spenser, listed as a gentleman; Nicholas Spenser, elected the Guild’s Warden in 1568; and John Spenser, listed as a “journeyman cloth-maker.” Of these, the last was likely the least affluent of the three—and most likely Edmund’s father, since school accounting records list Edmund as a scholar who attended the school at a reduced fee.

題目大意：

誰是Edmund Spenser的老爸？我們能確定的是他老爸在1560-1570年間有入裁縫師學校。去調資料，發現當時學校記錄裡有三個Spenser：

1. Robert Spenser 上流紳士
2. Nicholas Spenser 學院主任
3. John Spenser 做衣服的的零工

Premise 1:

we do know that as a youth Spenser attended the Merchant Tailors’ School in London for a period between 1560 and 1570. Records from this time indicate that the Merchant Tailors’ Guild then had only three members named Spenser: Robert Spenser, listed as a gentleman; Nicholas Spenser, elected the Guild’s Warden in 1568; and John Spenser, listed as a “journeyman cloth-maker.”

Premise 2:

since school accounting records list Edmund as a scholar who attended the school at a reduced fee.

（Edmund上學的時候是繳減免過的學費。）

Conclusion:

Of these, the last was likely the least affluent of the three—and most likely Edmund’s father

（最不有錢的那個John Spenser一定是他老爸。）

有沒有發現？結論突然跳出一個「有沒有錢」（affluent）的新概念，在前面的premise 1 沒有提到（只有講職業），premise 2也沒有提到（只有講reduced fee）。

判斷出結論出現前面premise沒有提到的新概念之後，這就是我們在處理 GMAT CR 充分假設題時，需要特別注意的「跳躍概念」。答案就是往斷橋的方向走，試圖建立 「有沒有錢」與「減免學費」之間的關係：

(E) The Merchant Tailors’ School did not reduce its fees for the children of the more affluent Guild members.

（有錢的人不會被減免學費。）

此即為正確答案。

希望這些 GMAT CR 充分假設題技巧的解析能幫助你更有效率地準備 GMAT 考試，攻克所有邏輯題型！