GMAT CR 题里面的充分假设（说服力强）

如何判断 GMAT 逻辑题的“跳跃概念”？

首先，你必须抓到结论句（相信结论句怎么抓应该是众版友必备能力）。结论句出现 premise 中没有提到的新概念，即为有可能出现跳跃概念的地方。

For example:

他家很有钱，所以他一定不会贪污。

• Premise: D的家里很有钱
• Conclusion: D一定不会贪污

“贪污”是Premise中没有提到过，而结论才出现的新概念，所以结论要成立，必须要把“贪污”跟“家里有钱”链接在一起。故 assumption：很有钱的人一定不会贪污。

再举一例：

Premise：P是医生
Conclusion：P不适合当市长

“市长”是premise没提到，在结论才出现的新概念，那就要去把“市长”跟premise已有的概念“医生”结合在一起。故assumption：作医生的人不适合当市长。

OG2016 新题范例

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.

题目大意：

谁是Edmund Spenser的爸爸？我们能确定的是他爸爸在1560-1570年间有入裁缝师学校。去调数据，发现当时学校记录里有三个Spenser：

1. Robert Spenser 上流绅士
2. Nicholas Spenser 学院主任
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上学的时候是缴减免过的学费。）

Conclusion:

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

（最不有钱的那个John Spenser一定是他爸爸。）

有没有发现？结论突然跳出一个“有没有钱”（affluent）的新概念，在前面的premise 1 没有提到（只有讲职业），premise 2也没有提到（只有讲reduced fee）。

判断出结论出现前面premise没有提到的新概念之后，答案就是往断桥的方向走，试图建立 “有没有钱”与“减免学费”之间的关系：

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

（有钱的人不会被减免学费。）

此即为正确答案。