GMAT邏輯推理錯誤解析:找不出因果

2015/06/11 瀏覽次數:7 收藏
分享到:

  GMAT邏輯推理對許多同窗來講都是一浩劫點,只有控制好GMAT邏輯技能能力自在應答GMAT邏輯題庫。

  無因就無果

  在假如題型裏,假如想要找出段落推理的一個需要前提,那末咱們起首就應明白,這個需要前提便是使得推理必定建立的一個假如,假如必為支撐性假如。

  例:

  The population of peregrine falcons declined rapidly during the 1950’s and 1960’s and reached an all-time low in the early 1970’s. The decline was attributed by scientists to the widespread use of the pesticide DDT in rural areas

  Which of the following, if true, gives the strongest support to the scientists’ claim?

  (A) DDT was not generally in use in areas devoted to heavy industry

  (B) In the time since the use of DDT was banned in 1972, the population of peregrine falcons has been steadily increasing

  (C) Peregrine falcons, like other birds of prey, abandon eggs that have fallen out of the nest, even if the eggs remain intact

  (D) Starlings, house sparrows, and blue jays-birds the peregrine falcon preys on were not adversely affected by DDT in their habitats

  (E) Other birds of prey, such as the osprey, the bald eagle, and the brown pelican, are found in the same areas as is the peregrine falcon.

  題幹是由果推因,遊隼數目降低由應用殺蟲劑(DDT)而至,咱們無妨將“遊隼數目降低”視為B, 而將“應用DDT”視為A, 假如由B→A準確,那末咱們就能夠得出沒有A就不會存在如今的B,是以咱們就能夠揣摸兩種情形,DDT禁用前與DDT禁用後遊隼在數目上的比擬,假如在 DDT禁用後,遊隼數目開端增長的話,那末咱們就會異常確定的是確切是殺蟲劑的應用致使了遊隼數目的削減。這類範例的標題失足的重要緣故原由有兩點:一:考生沒法掌控題幹請求,在段落內容以外舉行推理;二:沒法將題幹給出的緣故原由視做獨一緣故原由。

  發起:

  考生應能在日常平凡的賡續演習的過程當中,進修找出論點和結論的才能,並根據二者的幹系舉行斷定,只要弄清論點和結論也就相稱於找出了謎底。在實踐演習中,考生也應擅長從題幹所描寫的工具中找出焦點癥結詞語,一樣平常來說,咱們可以經由過程在選項中參加Not 來斷定推理建立的有用性並消除那些誤選項。

  以上是本日小編為考生整頓的相幹溫習材料,欲懂得更多GMAT測驗資訊,獲得更多GMAT測驗備考材料,敬請存眷GMAT測驗頻道。網預祝考生2015年GMAT測驗獲得好成就!