寧波丨攻克Gmat的邏輯評估題 只需一種技巧
來源：環球教育
小編：長安 525Gmat考試中，邏輯-評估題是常見的一種題型，寧波環球教育陳如成老師教大家一種攻克此類題型的方法。
Evaluation questions
步驟1：如識別原始答案是正面強化題干里的邏輯關系的
步驟2：且，否定原始答案 not it 將削弱原文主干邏輯
理論：也就是 正確答案不管是否正面強化且同時否定都能做到評估邏輯成立的與否
例題如下：
1.E monkeys in Rome often rub a certain type of worm into their fur. Secretions of these worms have been shown to contain two chemicals that are potent bee repellents, and bees carry parasites that debilitate the Es. The rubbing behavior is rare except during the rainy season, when bee populations are at their peak. Therefore, the monkeys probably rub the worms into their fur because doing so helps protect them against bees.
Which of the following would it be most useful to determine in order to evaluate the argument?
A.whether the two chemicals provide any protection for the worms against their own predators.
B.Whether the type of worm used by the E monkeys in Rome is found in other parts of the world.
C.Whether animals other than Es rub insects of any kind into their fur.
D.Whether the only time the worms are readily available to the Es is during the rainy season.
E.Whether secretions of any other insects accessible to the Es contain chemicals that repel bees.
主干邏輯鏈：E猴子常常撓一種蠕蟲 - 而這種蟲子的分泌物包含2種化學物質（可以抵制蜜蜂- 而這種蜜蜂附帶寄生蟲對E猴子有害 ）——條件1：前面兩橫邏輯鏈簡單總結為E猴子可以通過撓這種蠕蟲抵抗蜜蜂附帶的有害寄生蟲；條件2：這種撓的行為是很罕見的除了再雨季時 而這時蜜蜂數量也是在高峰期
結論：E猴子為了保護他們抵抗蜜蜂，才很有可能才有這樣的習慣。
條件1+條件2=結論
答案D：對D進行步驟1，僅僅在雨季他們可以接觸到這些蠕蟲，可以讓他們很好的抵御蜜蜂，加強了文章的結論。對D進行步驟2否定答案，說明除了雨季其他季節也可以有這樣的行為，所以雨季時的這種習慣也不一定是防止寄生蟲的=理解為蠕蟲的作用不一定是抵抗蜜蜂寄生蟲的
那么也到了評估題目邏輯鏈的：加強或削弱結論成立性。
