Re: [問題] GWD-9-40

看板GMAT (GMAT入學考試)作者danyuchn (Javy)時間13年前 (2012/08/08 23:51)推噓1(1推 0噓 0→)

留言1則, 1人參與討論串2/2 (看更多)

※ 引述《chenemily (天天保持好心情)》之銘言： : Agricultural societies cannot exist without staple crops. Several food : plants, such as kola and okra, are known to have been domesticated in western : Africa, but they are all supplemental, not staple, foods. All the recorded : staple crops grown in western Africa were introduced from elsewhere, : beginning, at some unknown date, with rice and yams. Therefore, discovering : when rice and yams were introduced into western Africa would establish the : earliest date at which agricultural societies could have arisen there. : Which of the following is an assumption on which the argument depends? : 請問這題最後要假設的是: : earliest date 則 societies could have arisen 兩個premise： 1.糧食作物是農業社會成立的條件之一 2.西非的糧食作物是稻米還有番薯，都是外來種。最後結論是：米飯跟蕃薯引進之時=西非最早有農業社會的時間直覺切入點有兩個： 1.'最早'？難道不會有更早的？[結論中看到最高級就要保持警覺了] 2. 第一個premise Agricultural societies cannot exist without staple crops. 隱含的意思是有農業社會就一定會有糧食作物，但有糧食作物並不一定有農業社會。[邏輯非充要] : 我選了B : A. People in western Africa did not develop staple crops that they stopped : cultivating once rice and yams were introduced. : 取非一旦rice and yams were introduced 則他們停止栽培staple crops : 請問有反駁到結論嗎?? 好像沒有你的取非取錯了。取非後的a選項應該是在稻米跟蕃薯藤引進之前，西非人持續栽培其他的糧食作物。 [這種作物到了米跟番薯引進之後就不種了] 這個直接打擊到結論：代表在米跟番薯引進之前還有更早的糧食作物 [只是後來不種了所以銷聲匿跡] 也就表示可能農業社會在米跟番薯引進前早已出現。 : B. There are no plants native to western Africa that, if domesticated, could : serve as staple food crops : 請問哪裡有錯 ???? 注意時態。現在沒有不代表以前沒有。而我們在討論的是以前的事。講述現在事實的前提被視為無關。很熟悉吧， awa裡常用的攻擊手法。 dustin -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 1.160.252.88